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General

Initial results suggested that some CPUs were not running at the specified MHz. This can be confirmed with a new program. See Measure CPU MHz. Tablet T11 has a Cortex-A15 CPU, rated at 2000 MHz, but only runs at 1700 MHz. This was further confirmed by the following text file that shows milliseconds used at different frequencies. Although 2 GHz appears to be used occasionally, the count did not increase after running several benchmarks.

2015 results have been included for all benchmarks running on a quad core Intel Atom processor (system A1). The Atom is rated as 1.33 GHz and 1.866 GHz using Turbo Boost, that it seems to use most of the time. With Intel CPUs, Android has a compatibility layer, called Houdini, that maps ARM instructions into X86 instructions. This is anticipated to produce poor performance, with questions on battery drain. The memory bus is 64 bits wide, compared with the more usual 32 bits, superior performance of this being demonstrated in the memory benchmarks. As indicated above, the benchmarks were recompiled to use both Intel and ARM processors. See comments on results below.

April 2015 - all benchmarks are being updated to provide details of the tablet or phone manufacturer and model, under System Information (see old example below.

May 2015 - All benchmarks being run on tablet T21 with a Quad Core Qualcomm Snapdragon 800 (Krait 400 MSM8974), speed measured as 2.15 GHz.

August to October 2015 - Tests with Android 5.0 and 5.1 run, identifying where performance gains were produced by 64 bit compilations (T22 with 64 bit Cortex-A53), faster Java speeds (ART virtual machine instead of Dalvik - T7, T22 and possibly earlier systems with Andoid 4.4) and 5.0 to 5.1 speed gains (T22).

Java Whetstone Benchmark

The first of this series is a Java version of the Whetstone Benchmark. The original, written in Fortran, was the first general purpose benchmark that set industry standards of computer performance. It was released in 1972, based on research by Brian Wichmann, and produced by Harold Curnow. Later updates became my responsibility. The three of us were UK Government employees. Speed was measured in terms of Million Whetstone Instructions Per Second (MWIPS). Later, in order to identify compiler over-optimisation, speeds of individual tests were shown as MOPS or MFLOPS - Millions of Operations or Floating Point Operations Per Second. In this version, test functions are for a minimum of one second, milliseconds for the originally defined pass count being used for MWIPS calculations, as 10,000 / Total milliseconds.

This compilation celebrates the 40th anniversary of the benchmark. The .apk application file can be downloaded from www.roylongbottom.org.uk/Java Whetstone.apk. See also Whetstone Benchmark History and Results for performance of computers from the 1960’s to modern times, and Whetstone Benchmark Results on PCs, these including speeds using Java code via Windows and Linux.

Java Whetstone Operation

Installation Click on the link for the apk file and download for the icon to appear in a Download list or in a Download folder on an SD card. In Settings, Applications, tick allow installation of non-Market applications. Tap the app icon and buttons to install and run it.

On loading the app, three buttons are provided. Run executes the benchmark and this normally takes between 10 and 20 seconds. The results shown below, up to Total Elapsed Time, are then displayed. The Info button produces three more buttons to provide a summary of the benchmark, a link to this HTML document and another to the History HTML pages. If the benchmark has been run, Save Emails the full results shown below to results@roylongbottom.org.uk (assuming that local Email has been set up). Note that the Email system might not display the results with a monospaced font, but the space characters appear to be there, allowing copying/pasting to a document with the right font (like Courier New 10).

Java Whetstone Results

The first measurements obtained were via emulators running on a 3 GHz quad core Phenom, the benchmark only using one core, of course. They suggest a slightly slower performance using a screen with a higher pixel density and much better performance with a later Android version and/or a more modern CPU.

Based on comparisons with CPU MHz, v7-A8 CPUs are faster than the ARM 926EJ CPU, due to VFPv3 enhanced floating point hardware, and in turn, v7-A9s are even faster. Performance of P8, with the Qualcomm MSM8960 CPU, is superior to these ARM devices. Some of the v7-A9 resulrs are not proportional to CPU MHz, where calculations suggest that that 1300 MHz T7 and 1500 MHz T4 are running at 1200 MHz. This was confirmed later, using a new program. See Measure CPU MHz.

August 2013 - Cortex-A15 based tablet T11 (really running at 1700 MHz) has the fastest speeds, at this time. On a per MHz basis, it outperforms Cortex-A9 by 30% to 40%, except on the mathematical function tests (headed COS and EXP) where performance is similar.

February 2015 - Atom system A1 is exceptionally fast (using Java), particularly on floating point and much faster than the tablet A2, with an earlier processor model.

May 2015 - T21, with the Qualcomm Snapdragon 800, obtained the fastest overall MWIPS rating, mainly due to the time taken for the long running third MFLOPS test. Other results were not particularly good, compared with the Atom or Cortex-A15.

June 2015 - T7a later version of Android.

August 2015 - T22 Cortex-A53, similar to Cortex-A9 at 1300 MHz.

October 2015 - T7 Nexus 7, Android 5.0.2 upgrade, faster Java, Android 5.1 same as 5.0.2, as shown below. Then T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), as with other benchmarks, all results were a little faster, average 6%.

Java Numeric Results

Native Whetstone Benchmark

The second Android benchmark uses the same Java front end code as #1, producing identical output format, but headed “Android Native Whetstone Benchmark”, with the C/C++ program using Java Native Interface and saved in a jni folder (see zip file).

The C code does not produce any output (in this case?), except returning results to the Java program in a string. The code is compiled into a library, through an Android.mk file, in my case via a Terminal command ~/workspace/NativeWhetstone/jni$ ~/Eclipse/android-ndk-r7/ndk-build. The Java program includes a function to load the library.

Unexpectedly, the first compilation produced slower performance than a Java version - See T2 above and T2 @5 below. The solution was a new Application.mk file in the jni folder. This has a single directive (APP_ABI := armeabi armeabi-v7a) to build two libraries, one for older ARM5 CPUs and one for ARM7 with vfpv3 high performance floating point units, these being automatically selected at run time. As can be seen for T2 @7 below, a remarkable performance improvement was produced.

The .apk application file can be downloaded from www.roylongbottom.org.uk/NativeWhetstone.apk. See also Whetstone Benchmark History and Results for performance of computers from the 1960’s to modern times, and Whetstone Benchmark Results on PCs, these including speeds via Windows and Linux.

Native Whetstone Benchmark Results

For these tests, the emulator was run using one CPU of a 2.4 GHz Core 2 Duo. Again, this showed a performance gain emulating v7-A, with a further improvement using instructions for a vfpv3 FPU. Unlike tablet T2, results on tablet T1, with the 926EJ CPU, show that the first compilation produces the same performance as the second, The latter includes a library for vfpv3 instructions that are clearly not used.

As with Java Whetstone results, T4 and T7, v7-A9 CPUs, appear to be running slow at 1200 MHz, with T2, T6 and P11 running at the specified clock speed. This time, the Qualcomm CPU is not particularly faster.

Benchmarks run on T4, under Android 4, have a Development CPU Mode Setting of Performance, where continuously running at the maximum MHz could be expected. With a Normal Setting, performance can vary widely, as reflected below.

August 2013 - Compared with T7, the results show that T11, with the Cortex-A15, performs badly, on a per MHz basis, like 10% slower, although it obtains some of the best scores for ARM CPUs. The clock speed was confirmed, whilst running the benchmark, using the program that measures CPU MHz.

February 2015 - Atom system A1 (via mapping conversion), performs quite well on the floating point tests, but at a higher MHz, but falls down on others. The later Intel native code version, A1*I, was 95% faster, on average, over the eight test functions. In ARM mode, with T7 and T11, performance was little different, but the EXP test was particularly slow, affecting the overall MWIPS rating (See Android Native ARM-Intel Benchmarks.htm).

May 2015 - T21, with the Qualcomm Snapdragon 800, was much faster than the Cortex-A15, even after adjusting for the higher CPU GHz. With native Intel code, the Atom obtained similar speeds.

August 2015 - T22 included with 64 bit CPU and 64 bit Android 5.0. Results at 32 and 64 bits were not that different.

October 2015 - T7 Nexus 7 and T7*I, Android 5.0.2 and 5.1 upgrades, similar speeds (not shown). T22 Android 5.0.2 to 5.1 (ARM v8 CPU), all results faster, average 4.5% at 32 bits and 5.1% at 64 bits (see below). For the latter, Exp test numeric result changed from 0.935364604 to 0.830691695.

Linpack 100 Benchmark

The Linpack Benchmark was produced from the "LINPACK" package of linear algebra routines. It became the primary benchmark for scientific applications, particularly under Unix, from the mid 1980's, with a slant towards supercomputer performance. The original double precision C version, used here, operates on 100x100 matrices. Performance is governed by an inner loop in function daxpy() with a linked triad dy[i] = dy[i] + da * dx[i], and is measured in Millions of Floating Point Operations Per Second (MFLOPS). Two versions use a Java front end, again providing Run, Info and Save buttons, with the main C code compiled by Android Native Development Kit. A third comprises the same front end with Java code for Linpack calculations. They are Linpackv5.apk (LP5), using old, slow instructions, Linpackv7.apk (LPK) to use faster vfpv3 hardware and LinpackJava.apk (LPJ) that depends on a suitable Runtime Environment. A fourth variety, LinpackSP.apk (LPsp) is also available, comprising the C version compiled to use single precision floating point. The .apk application files can be downloaded from:

Further details of the Linpack benchmark, and results from Windows and Linux based PCs, can be found in Linpack Results.htm. The Java version has the same calibration calculations as my C program but the uses the Code from Netlib for the calculations, as C uses different function calling conventions.

Linpack Benchmark Results

MFLOPS results for the four Android versions are provided below. Also shown are those for PCs, compiled for Windows and Linux, the benchmarks being downloadable via Linpack Results.htm. Java results for PCs were from using Linpack Java Applet from Netlib and Android x86.

The most popular Android Linpack benchmark appears to be from GreeneComputing. This is a Java variety and produces similar performance ratings to my LinpackJava on T1 and T2 as quoted below. The former also has a multi-processor test but it is not clear whether it uses multiple threads on a single program, or multiple copies of the program, where results and not really representative for comparing with published MP speeds.

Using compiled C programs a Cortex-A9 can be nearly as fast as an Atom running at the same MHz, but this is not the case with Java. Unlike Intel, it seems that the double precision version can be much slower than using single precision calculations.

The T4 and T7 v7-A9 CPUs again appear to be slow at 1200 MHz but T2, T6 and P11 seem to be at full speed. The Qualcomm CPU performs well on this benchmark.

August 2013 - Tablet T11, with the Cortex-A15 CPU, runs at 2.5 times the speed of an A9 processor of the same MHz (if one existed), using the most recent floating point instructions. Linpack benchmark results are often quoted for ARM based systems, probably a design consideration.

February 2015 - Atom system A1 again obtains the highest Java scores so far, but also using the obsolete V5 floating point instructions. Then it is not so good on other compilations, particularly if CPU MHz is taken into account. The standard C versions were recompiled, using the later gcc 4.8 - see A1>>, providing a significant performance gain, then the A1*I native Intel version produced further gains. more than twice as fast as the original (See Android Native ARM-Intel Benchmarks.htm).

May 2015 - T21, with the Qualcomm Snapdragon 800 produced the fastest results with the Java version but other varieties were generally a little slower than the Cortex-A15 that runs at a lower CPU MHz.

June 2015 - T7a LinpackJava later version of Android.

August 2015 - T22 included with 64 bit CPU and 64 bit Android 5.0. 64 bit operation increased speed by almost 2 times with double precision calculations and 2.7 times at single precision.

October 2015 - T7 Nexus 7, Android 5.0.2 upgrade, faster Java, other results. No change up to 5.1.1. Then, T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), as with other benchmarks, all results were a little faster, average around 3% (see below). Android 5.0 Java speed improvements are due to ART virtual machine being used, instead of Dalvik. This might also be responsible for some high scores using Android 4.4.

A1, with Intel Atom Z3745, upgrade to Android 5.0 produced much slower speeds and the benchmark had to be reinstalled for improvement, but still disappointing.

Dhrystone 2 Benchmark

The Dhrystone "C" benchmark provides a measure of integer performance (no floating point instructions). It became the key standard benchmark from 1984, with the growth of Unix systems. The first version was produced by Reinhold P. Weicker in ADA and translated to "C" by Rick Richardson. Two versions are available - Dhrystone versions 1.1 and 2.1. The second version, used here, was produced to avoid over-optimisation problems encountered with version 1, but some is still possible. Because of this, optimised and non-optimised compilations are provided. Speed was originally measured in Dhrystones per second. This was later changed to VAX MIPS by dividing Dhrystones per second by 1757, the DEC VAX 11/780 result, the latter being regarded as the first 1 MIPS minicomputer.

The optimised .apk app file (DS2) can be downloaded from www.roylongbottom.org.uk/Dhrystone2.apk and the non-optimised one (DSN) from www.roylongbottom.org.uk/Dhry2Nopt.apk. Further details of the Dhrystone benchmark, and results from Windows and Linux based PCs, can be found in Dhrystone Results.htm.

Dhrystone 2 Benchmark Results

Unlike when using floating point, on this benchmark, the Cortex-A9 CPU is less than three times faster than the 926EJ on all measurements, a ratio similar to that provided by the BogoMIPS results, shown in System Information. Measurements for Intel Atom and Core 2 CPUs are also provided for Windows (Watcom 32 Bit) and Linux (GCC 32 Bit and 64 Bit) compilations. Core 2 results show considerable variations, highlighting the Danger, in comparing results from different compilers. In this case, the significant difference is between 32 and 64 bit compilations under Linux, where far more registers are available for optimisation at 64 bits. On using them, the compiler might decide that multiple passes are not needed and remove repetitive calculations. Also, historically, computer manufacturers are known to have optimised their own compilers to inflate speeds of standard benchmarks.

Here, the optimised benchmark produces up to 1.4 Vax MIPS/MHz for the Cortex-A9. ARM, themselves, quote 2.5 Vax MIPS (DMIPS) per MHz for the same processor, probably just another different compiler variation.

Note the speed on tablet T5. This uses a MIPS CPU and requires an emulator to execute compiled ARM processor instructions. T5a results are for an identical tablet, from a different user, but with no details of settings used. The T4 and T7 v7-A9 CPUs again appear to be slow at 1200 MHz but T2 and P11 seem to be at full speed.

August 2013 - Tablet T11, with the Cortex-A15, is 30% to 40% faster than would be expected from the last generation of ARM processors.

February 2015 - Atom system A1 obtains a respectable performance on the non-optimised test but the optimised version is relatively slow, affected more on translating ARM instructions. The later Intel native code version, A1*I, was 33% faster (See Android Native ARM-Intel Benchmarks.htm).

May 2015 - T21, with the Qualcomm Snapdragon 800 produced the highest Vax MIPS rating so far, but MIPS/MHz of 1.79 is lower than the 1.88 for the Cortex A15.

August 2015 - T22 included with 64 bit CPU and 64 bit Android 5.0. 64 bit operation produced a significant improvement.

October 2015 - T7 Nexus 7, Android 5.0.2 and 5.1.1 upgrades, similar speeds (not shown). Then, T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), as with other benchmarks, all results were a little faster, average around 3% (see below).

Livermore Loops Benchmark

For Cray 1 comparison purposes, it is more appropriate to use Cray 1S results, as these are from running all 24 kernels. See below for best results so far, currently T4 using one of the two 1500 MHz cores, where performance equates to 15.5 times a Cray 1. Cost of this tablet was $130, in May 2012. Cray 1 was $7M.

The benchmark execution file can be downloaded from www.roylongbottom.org.uk/LivermoreLoops.apk. Further details of the Livermore Loops benchmark, and results from Windows and Linux based PCs, can be found in Livermore Loops Results.htm.

Livermore Loops Benchmark Results

System T2, with the high speed vfpv3 hardware, is again shown to be around 20 times faster than the tablet T1, on these floating point calculations. Relative to CPU MHz, T2 performs better than v7-A9 CPUs T4 and T7 and P8 Qualcomm, but P11 outshines them all. This benchmark has some L2 cache speed dependency. This cache is shown to be particularly fast on later benchmarks.

August 2013 - again, it is pointed out that tablet T11, with the Cortex-A15, is really running at 1700 MHz (not 2000), and some Cortex-A9s, used for comparison, are at 1200 MHz. This A15 is the first ARM processor to demonstrate more than 1 GFLOPS, on this benchmark. On a per MHz basis, the results demonstrate a wide range of relativity to A9s, varying from slighly slower to 3.4 times faster, the official average showing an improvement of 50%. Then, the system is also running at a higher MHz.

February 2015 - Atom system A1 relative performance is similar to C compiled Linpack results, that is not very good, probably as some of the calculations are quite complex. The native Intel speeds (A1 Ax86) provided an average gain of 2.8 times, based on ratios for the 24 loops. T11 Ax86 provided a range of gains and losses, from 0.75 to 1.23 times (See Android Native ARM-Intel Benchmarks.htm).

May 2015 - Based on the official average speed (Geometric mean), T21, with the Qualcomm Snapdragon 800, is 5% slower than the Cortex-A15, with ratios for the 24 loops varying between 0.53 and 1.25 times.

August 2015 - T22 included with 64 bit CPU and 64 bit Android 5.0, where 64 bit/32 bit performance ratios vary between 0.8 and 7.9 times, with a geometric mean ratio of 1.5.

October 2015 - T7 Nexus 7, Android 5.0.2 to 5.1.1 upgrades, similar speeds (not shown). Performance of the 24 kernels can vary a little, on a given processor. In the case of T22, with ARM-v8 CPU, average speed gains from Android 5.0.2 to 5.1 were again around 3%, for both 32 bit and 64 bit compilations (see below), with most of the 24 results indicating faster operation.

MemSpeed Benchmark

This benchmark measures data reading speeds in MegaBytes per second carrying out calculations on arrays of cache and RAM data, sized 2 x 8 KB to 2 x 32 MB. Calculations are x[m]=x[m]+s*y[m] and x[m]=x[m]+y[m], using double and single precision floating point and x[m]=x[m]+s+y[m] and x[m]=x[m]+y[m] with integers. Million Floating Point Operations Per Second (MFLOPS) speed can be calculated by dividing double precision MB/second by 8 and 16, for the two tests, and single precision speeds by 4 and 8. Assembly listings for integer tests show that Millions of Instructions Per Second (MIPS) can be found by multiplying MB/second by 0.78 with 2 adds and 0.66 for the other test. Cache sizes are indicated by varying performance as memory usage changes.

Results below show maximum MFLOPS and MIPS speeds. The first integer test loop has 25 assembler type instructions, comprising 8 loads (x 4 bytes), 11 adds (8 data, 2 addresses, 1 loop increment), 4 stores, 1 compare, 1 branch), or an instructions/bytes ratio of 0.78125. Best Cortex-A9 MIPS/MHz ratio is 1.59.

Using L1 cache data, performance differences on Cortex CPUs are similar to the benchmarks above. In the case of the Qualcomm Snapdragon, floating point tests are significantly faster, relative to CPU MHz, but a little slower using integers. Other than comparisons with the Snapdragon CPU, P11, the Galaxy SIII, provides a significant performance gain using L2 cache. This might be due to the claimed use of 128-bit internal buses, instead of 64-bit. The most outstanding results for P11 are using memory, typically three times faster than other A9s, and these might be aided by the L2 cache arrangement. P11 is said to have dual channel memory and, although not always stated, others have a single channel (see Memory and Bus Speed Calculations below).

August 2013 - T11, with the Cortex-A15, provides the fastest speeds reported here. Again, more than 1 GFLOPS is demonstrated, but this time with single precision calculations. Compared with P11, the last leader, and adjusting to compare at the same clock speed, memory speeds are similar, but the T11 is 2 to 3 times faster on double precision calculations, 3 to 4 times at single precision and 1.5 to twice as fast with integers. This A15 obtains 1.8 MIPS/MHz.

February 2015 - Atom system A1 provides consistent speeds over all data sizes, indicating a CPU speed limitation. On a per MHz basis, average performance, via cached based data, is 60% of the Cortex-A15, due to that Houdini conversion. Then, on the same basis, the 64 bit memory bus leads to the Atom being 60% faster, on average calculations using RAM data.

The new native ARM/Intel results, on A1, averaged 44% faster via L1 cache data, 27% using L2 and 14% from RAM. This version was also run on other tablets with some gains using caches. (See Android Native ARM-Intel Benchmarks.htm).

June 2015 - T21 with the Qualcomm Snapdragon 800 produces some of the fastest results, compared with earlier ARM CPUs, particularly on RAM speed.

August 2015 - Results provided for 64 bit T22. The 64 bit compilation was nearly twice as fast as the 32 bit version with double precision floating point calculations, using cached data, and provided a 33% increase from RAM. Corresponding single precision ratios were 2.6 and 2.0 times and integer ratios of 2.2 and 1.5.

October 2015 - T7 Nexus 7, Android 5.0.2 to 5.1.1 upgrades, similar speeds (not shown). 32 bit compilation on T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), showed that all tests were faster with an average of 5%. The 64 bit version was 4% faster on cache based data but similar using RAM (see below).

Memory and Bus Speed Calculations

Some assumptions regarding memory and bus speeds are aired here, based on knowledge provided for mainstream PCs, Google searches and results below. Whereas PC memory bus width is 8 bytes (per channel), that for these ARM systems is 4 bytes or less, considerably reducing relative maximum memory data transfer speeds.

As with PCs, data is read in bursts and this is normally clear from BusSpeed results, from which maximum data transfer speeds can be estimated. Suggested burst size for System T1 is 8 words or 32 bytes with maximum speed of 29 x 8 or 232 MB/second. For T2 and T4, 16 byte bursts are suggested with maximum speed between 35 x 16 to 39 x 16 or 560 to 624 MB/second. One reason for not achieving this performance is startup delays (CAS Latency - number of bus clocks).

It seems to be extremely difficult to obtain details of bus speeds and channel/bus configurations for Android devices. T7 appears to have single channel, double data rate 1333 MHz RAM, where maximum speed would be 666.7 (clock MHz) x 2 (DDR) x 4 (32 bit wide bus) = 5.33 GB/second. Then P11, with dual channel, DDR 1066 MHz RAM, could produce 533 x 2 x 2 (channels) x 4 = 8.53 GB/second. Speed estimated from burst tests and real measurements are nowhere near these maximum speeds but can be much faster using the MultiThreading Benchmark version.

There are startup delays on transferring bursts of data, usually associated with the number of bus clocks under the heading of CAS Latency. With DDR, a one clock overhead can reduce data transfer rate by 33%. Measured maximum speed reading all data can also be much lower than that derived from burst reading tests, due to various internal processor delays. For examples see the AndI 2Reg and AndI 1Reg) in BusSpd2K Memory Speed Results.

BusSpeed Benchmark

This benchmark is designed to identify reading data in bursts over buses. The program starts by reading a word (4 bytes) with an address increment of 32 words (128 bytes) before reading another word. The increment is reduced by half on successive tests, until all data is read. On reading data from RAM, 64 Byte bursts are typically used. Then, measured reading speed reduces from a maximum, when all data is read, to a minimum on using 16 word increments (64 bytes). Potential maximum speed can be estimated by multiplying this minimum value by 16. With this burst rate, measured speed at 32 word and 16 word increments are likely to be the same. Cache sizes are indicated by varying speed as memory use changes. Note, with smallest L1 cache demands, measured speed can be low due to overheads when reading little data.

The program C source code is as used for Linux, See BusSpd2K Results.htm. This has unrolled loops with up to 64 AND statements (& array[i ] to & array[i+63]). The Linux compiler for Intel CPUs translates this into 64 assembly instructions ANDing data from indexed memory locations. In this case, Integer MIPS approximately equals MB/second divided by 4. The Android NDK compiler generates 133 assembler type instructions, including 64 loads and 64 ANDs, where MIPS equates to MB/second divided by 1.92 (64 x 4 / 133) - twice as many instructions as Intel. Maximum MIPS and MIPS/MHz details have been added to the results below.

With data from L1 cache, tablets T4 and T7 again produce lower performance than might be expected, compared with CPU MHz with T6 better, compared with P11. The Qualcomm Snapdragon results are also on the low side, and it appears to have burst reading from L1 cache, with much lower data transfer speeds with the highest incremented addressing. As with MemSpeed, the upgraded Cortex-A9 CPU in P11 provides significant performance gains using L2 cache and RAM. Unlike using L1 cache, the Qualcomm CPU provides superior performance at high address increments.

August 2013 - T11, with the EXYNOS running at 1700 MHz, produces the best integer performance so far, or a maximum of 3224 MIPS or 1.9 MIPS per MHz. This can be compared with P11 Cortex-A9 at 1400 MHz, that reaches 2205 MIPS or 1.6 MIPS per MHz. T11’s L2 cache is even more efficient at twice the speed of P11, after adjusting for the same CPU MHz.

February 2015 - Data streaming of 64 AND statements appears to be easily convertible to Intel instructions with Atom system A1, leading to a maximum of 3588 MIPS. This is faster than T11, but with a similar MIPS/MHz. Memory bandwidth is also 33% faster but results here are 2.8 times faster, reading all data. Part of this is due to the 64 bit memory bus, compared with 32 bit with ARM processors.

The later native code ARM/Intel version provided no real performance improvement on tablet A1, with the Atom Z3745 CPU. In ARM mode, there was also little difference on other tablets. (See Android Native ARM-Intel Benchmarks.htm).

June 2015 - T21 with the Qualcomm Snapdragon 800 is shown to be faster than earlier ARM CPUs, when using RAM based data, but Atom A1 provides superior performance, in this area.

August 2015 - Results provided for 64 bit T22. On reading all data, the 64 bit compilation was nearly twice as fast as the 32 bit version using L1 cache, then 1.5 times from L2 cache and 1.25 times via RAM.

October 2015 - T7 Nexus 7, Android 5.0.2 then up to 5.1.1 upgrades produced similar speeds (not shown). Reading all data, T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), produced average gains of 4%, at 32 bits, and over 2% at 64 bits (shown below).

Randmem Benchmark

RandMem benchmark carries out four tests at increasing data sizes to produce data transfer speeds in MBytes Per Second from caches and memory. Serial and random address selections are employed, using the same program structure, with read and read/write tests using 32 bit integers. The main purpose is to demonstrate how much slower performance can be through using random access. Here, speed can be considerably influenced by reading and writing in bursts, where much of the data is not used, and by the size of preceding caches.

The results below show that random access performance is approximately the same as BusSpeed with address increments of 32 words, the burst reading effect. This program is again based on indexed memory addressing where the older technology CPU can be faster than than the System T2. This might be due to poor implementation of the memory bus interface on this tablet, as noted on PC tests. Atom results are provided, again showing better relative performance, particularly when using data from RAM. As with BusSpeed, and not noticed so far on the other benchmarks, measured speeds using L1 cache are sometimes slow to start with.

Relative performance of Cortex CPUs is similar to the other memory tests. The Qualcomm Snapdragon performs very well on random access to L2 cache and RAM, repeating the effects of faster burst reading speed seen in BusSpeed.

August 2013 - Cortex-A15 based T11 again come out fastest at this time. Best comparative performance is for data using L2 cache, particularly with serial reading. where RAM speed comparisons are also good.

February 2015 - Atom system A1 is faster than the Cortex-A15 tablet on all L1 cache tests, more significantly so with writing/reading L2 cache based data and all tests using RAM, but up to 50% slower reading tests from L2.

On testing A1, with the later native code ARM/Intel version, results showed gains of around 25% on all reading tests, but no difference with writing and reading. The same benchmark, running on other tablets, showed some improvement, using cache based data (See Android Native ARM-Intel Benchmarks.htm).

June 2015 - T21 with the Qualcomm Snapdragon 800 is much faster than earlier ARM CPUs using RAM based data, but mainly not as fast as Atom A1. T21 is slower than T11 and A1 on serial reading using L2 cache.

August 2015 - Results provided for 64 bit T22.showing 32 bit and 64 bit versions were not that different overall, each one slightly faster on some tests.

October 2015 - T7 Nexus 7, Android 5.0.2 then up to 5.1.1 upgrades produced similar speeds (not shown). As with other benchmarks, T22 Android 5.0.2 to 5.1 (ARM-v8 CPU), produced somewhat faster performance.

================================================= System T1, ARM 926EJ 800 MHz, Android 2.2 Android RandMem Benchmark 20-Feb-2012 16.51 MBytes/Second transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 841 1119 666 955 32 222 147 83 62 64 145 169 56 53 128 198 181 48 57 256 191 178 44 58 512 196 180 27 32 1024 189 180 22 26 4096 193 181 19 23 16384 195 177 19 22 65536 186 166 19 22 Total Elapsed Time 49.0 seconds ================================================= System T2, ARM Cortex-A9 800 MHz, Android 2.3.4 Android RandMem Benchmark 20-Feb-2012 16.45 MBytes/Second transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 1777 1879 1669 1809 32 1359 1394 1185 1505 64 799 861 621 755 128 394 202 295 333 256 147 146 92 104 512 133 136 71 42 1024 125 125 53 62 4096 129 98 41 53 16384 128 113 42 45 65536 121 115 30 32 Total Elapsed Time 15.7 seconds ================================================= System T4, ARM Cortex-A9 1500 MHz, Android 4.0.3 Measured 1200 MHz Android RandMem Benchmark 11-May-2012 17.19 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2777 3014 2671 3021 L1 32 2254 2490 2062 2561 64 872 1109 875 998 L2 128 797 870 674 721 256 807 932 528 560 512 543 465 186 182 1024 388 241 78 83 RAM 4096 367 229 56 48 16384 366 229 48 45 65536 335 228 41 38 Total Elapsed Time 13.2 seconds ================================================= T7, ARM Cortex-A9 1300 MHz, Android 4.1.2, Measured 1200 MHz Android RandMem Benchmark 20-Oct-2012 11.14 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2788 3041 2795 3041 L1 32 2769 3011 2767 3020 64 1027 1038 839 911 L2 128 916 918 616 649 256 904 905 514 538 512 899 907 475 499 1024 712 699 345 354 4096 323 284 92 88 RAM 16384 316 282 73 70 65536 314 281 65 62 Total Elapsed Time 10.9 seconds ================================================= T6, ARM Cortex-A9 1600 MHz, Android 4.0.3, DDR3 RAM Android RandMem Benchmark 26-Aug-2012 13.58 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 3925 4257 3881 4275 L1 32 3867 4204 3864 3998 64 1276 1284 1042 1182 L2 128 1126 1133 775 844 256 1118 1121 641 706 512 1107 1113 584 655 1024 750 715 352 366 4096 362 314 103 97 RAM 16384 337 317 84 79 65536 369 317 75 71 Total Elapsed Time 10.3 seconds ================================================= T8 Allwinner A13-MID, 1 GHz ARM Cortex-A8 Android RandMem Benchmark 1.1 05-Mar-2013 10.03 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2032 2787 2057 2802 L1 32 2014 2736 1972 2668 64 458 309 92 141 L2 128 423 316 74 121 256 304 204 39 58 RAM 512 270 201 29 36 1024 267 192 27 39 4096 258 197 23 35 16384 247 206 22 34 65536 254 206 19 28 Total Elapsed Time 20.7 seconds ================================================= T11 Samsung EXYNOS 5250 2.0 GHz Cortex-A15, Android 4.2.2 Measured 1.7 GHz Android RandMem Benchmark 1.1 13-Aug-2013 17.29 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2881 2478 3388 3650 L1 32 4301 2968 3197 3249 64 3669 2511 2201 2249 L2 128 3566 2560 1571 1566 256 3557 2461 1334 1256 512 3524 2547 1136 1098 1024 1933 1144 534 513 4096 1993 1064 184 173 RAM 16384 1970 1086 141 144 65536 1973 1117 106 104 Total Elapsed Time 9.1 seconds T11 Samsung EXYNOS 5250 2.0 GHz Cortex-A15, Android 4.2.2 ARM/Intel RandMem Benchmark 1.1 23-Apr-2015 20.42 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 3642 3102 5464 4114 32 5462 3409 4096 3737 64 4800 2785 2028 2064 128 4308 2575 1572 1589 256 4381 2574 1332 1260 512 4311 2544 1215 1097 1024 2033 1156 513 471 4096 1891 1042 213 178 16384 2028 1032 154 139 65536 2033 1055 109 106 Total Elapsed Time 9.2 seconds ================================================= T21 Qualcomm Snapdragon 800 2150 MHz, Android 4.4.4 Android RandMem Benchmark 1.1 10-Jun-2015 12.43 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 4407 4704 3995 4900 32 2611 3071 2207 2703 64 2496 2797 1821 2139 128 2080 3173 1668 1758 256 2425 3183 1439 1520 512 2359 3116 1193 1355 1024 2366 3117 368 382 4096 2293 2280 201 209 16384 2293 2237 170 175 65536 2299 2261 146 150 Total Elapsed Time 8.5 seconds T21 Qualcomm Snapdragon 800 2150 MHz, Android 4.4.4 ARM/Intel RandMem Benchmark 1.1 10-Jun-2015 12.45 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 5005 4626 4067 4863 32 3253 2994 2246 2622 64 3223 2855 1986 2072 128 2861 3128 1912 1776 256 3246 3174 1666 1523 512 3195 3111 1469 1372 1024 3190 3079 369 383 4096 3027 2381 212 213 16384 3065 2300 174 177 65536 3080 2281 150 150 Total Elapsed Time 8.6 seconds ================================================= T22, ARM Cortex-A53 1300 MHz, Android 5.0.2 ARM/Intel RandMem Benchmark 1.2 06-Aug-2015 12.29 Compiled for 32 bit ARM v7a MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2807 3606 2753 3595 L1 32 2719 3433 1429 1930 64 2615 3266 914 1166 L2 128 2592 3243 705 828 256 2570 3223 637 720 512 2367 2684 237 347 1024 2137 1855 120 163 RAM 4096 1918 1658 83 97 16384 2152 1665 74 85 65536 2104 1652 72 64 Total Elapsed Time 11.6 seconds T22, ARM Cortex-A53 1300 MHz, Android 5.1 ARM/Intel RandMem Benchmark 1.2 28-Sep-2015 21.24 Compiled for 32 bit ARM v7a MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2895 3703 2848 3666 32 2746 3508 1948 2640 64 2688 3368 945 1205 128 2682 3349 728 856 256 2658 3329 641 741 512 2519 2860 264 376 1024 2249 1858 122 165 4096 1939 1682 84 99 16384 2325 1678 76 87 65536 2190 1677 73 65 Total Elapsed Time 11.4 seconds T22, ARM Cortex-A53 1300 MHz, Android 5.0.2 ARM/Intel RandMem Benchmark 1.2 06-Aug-2015 12.32 Compiled for 64 bit ARM v8a MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 3865 3033 3798 3027 32 3622 2760 3105 2734 64 3094 2803 1011 1077 128 3074 2740 776 801 256 3050 2771 718 693 512 2420 2463 270 371 1024 1322 1853 131 164 4096 1754 1598 87 100 16384 1791 1586 75 91 65536 1856 1609 57 68 Total Elapsed Time 14.6 seconds T22, ARM Cortex-A53 1300 MHz, Android 5.1 ARM/Intel RandMem Benchmark 1.2 28-Sep-2015 22.27 Compiled for 64 bit ARM v8a MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 4009 3129 4009 3122 32 3987 3118 3881 3085 64 3170 2838 1041 1107 128 3143 2871 802 829 256 3155 2856 739 726 512 2421 2508 214 348 1024 1609 1796 127 166 4096 1795 1634 89 104 16384 1854 1629 77 91 65536 1785 1608 57 67 Total Elapsed Time 14.4 seconds ================================================= P11, ARM Cortex-A9 1.4 GHz, Android 4.0.4 Android RandMem Benchmark 23-Dec-2012 15.18 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 3253 3542 3255 3438 L1 32 2626 2794 2511 2945 64 1453 1471 1298 1467 L2 128 1298 1302 1030 1095 256 1279 1289 819 826 512 1054 1075 237 245 1024 1155 989 150 146 4096 1101 919 107 106 RAM 16384 1061 911 91 90 65536 1048 919 73 77 Total Elapsed Time 10.7 seconds ================================================= P10 Qualcomm Snapdragon, 1.5 GHz, Android 4.0.3, DDR2 Android RandMem Benchmark 25-Sep-2012 09.02 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 1878 3732 2564 3081 L1 32 1545 1796 1258 1487 L2 64 1472 1797 1030 1205 128 1502 1769 869 1084 256 1548 1786 795 938 512 1323 1264 604 798 1024 745 697 230 268 4096 425 457 149 145 RAM 16384 481 458 120 130 65536 501 458 100 106 Total Elapsed Time 10.2 seconds ================================================= P35 Lenovo A859 Quad-core Cortex-A7 1.3 GHz Android RandMem Benchmark 1.1 12-Nov-2015 01.20 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 2302 3930 2317 3796 32 2144 3867 2314 3837 64 2133 2855 822 1204 128 2098 2271 765 864 256 2154 2625 676 597 512 1764 1760 261 334 1024 1678 1038 115 138 4096 1716 1180 74 89 16384 1694 1169 74 76 65536 1304 1163 62 64 Total Elapsed Time 12.7 seconds ================================================= A1 Quad Core 1.86 GHz Intel Atom Z3745, Android 4.4 Dual Channel LPDDR3-1066 Bandwidth 17.1 GB/s Android RandMem Benchmark 1.1 01-Feb-2015 10.12 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 3434 5064 3462 5113 L1 32 2833 4042 2652 3645 64 2837 4058 2068 2561 L2 128 2822 4041 1809 2205 256 2828 4040 1435 1755 512 2816 3997 1245 1456 1024 2578 3256 379 445 4096 2412 1946 209 268 RAM 16384 2485 2039 179 217 65536 2457 2041 140 170 Total Elapsed Time 11.8 seconds A1 Quad Core 1.86 GHz Intel Atom Z3745, Android 4.4 ARM/Intel RandMem Benchmark 1.1 23-Apr-2015 17.27 MBytes/Second Transferring 4 Byte Words Memory Serial....... Random....... KBytes Read Rd/Wrt Read Rd/Wrt 16 4291 5626 4584 5630 32 3217 3792 3492 3783 64 3677 4253 2629 2644 128 3666 4241 2299 2289 256 3688 3930 1829 1850 512 3682 4189 1522 1592 1024 3285 3558 562 667 4096 2999 2007 272 274 16384 3019 2065 210 220 65536 2989 2068 141 186 Total Elapsed Time 8.8 seconds ================================================= Atom 1666 MHz, DDR2 RAM 800 MHz, Linux 16 3976 5132 4100 5134 64 3086 3215 1042 1349 65536 2708 1290 49 74

Note the read only speeds of >100 MB/second, following power off/on with cached files.

Results Android DriveSpeed Benchmark 1.1X 22-Jun-2015 21.13 SD Card Data Not Cached MBytes/Second MB Write1 Write2 Write3 Read1 Read2 Read3 8 20.5 22.3 23.3 50.9 50.2 51.0 16 23.0 23.5 23.4 50.8 50.3 51.1 Cached 8 111.8 94.3 22.1 671.6 707.7 701.3 Random Write Read From MB 4 8 16 4 8 16 msecs 1.18 1.36 1.70 0.00 0.01 0.01 200 Files Write Read Delete File KB 4 8 16 4 8 16 secs MB/sec 0.43 0.74 1.26 7.07 9.32 12.15 msecs 9.44 11.02 12.97 0.58 0.88 1.35 0.402 Files Deleted Total Elapsed Time 30.7 seconds Path Used /mnt/sdcard/ Button Selections RunI path = getFilesDir().getAbsolutePath() + "/"; RunS path = Environment.getExternalStorageDirectory().getPath() + "/"; System See Android Test Drive Cached MB Path T1 2.2 RunS External SD SD1 No 3897 /sdcard/ RunI Internal Drive ID1 Yes 1602 /data/data/com.drivespeed/files/ T2 2.3.4 RunS External SD SD2 No 15185 /mnt/sdcard/ RunI Internal Drive ID2 Yes 702 /data/data/com.drivespeed/files/ T4 4.0.3 RunS Internal SD SDI4 No 13857 /mnt/sdcard/ RunI Internal Drive ID4 Yes 802 /data/data/com.drivespeed/files/ T7 # 4.4.3 RunS Internal SD SDI7 Yes 13676 /storage/emulated/0/ 4.4.3 RunI Internal Drive ID7 Yes 13676 /data/data/com.drivespeed/files/ T11 4.2.2 RunS External SD SD3 No 12757 /mnt/sdcard/ 4.2.2 RunI Internal Drive ID11 Fail 373 /data/data/com.drivespeed/files/ Error writing file A1 4.4.2 RunS Internal SD SDIA1 Fail 11395 /storage/emulated/0/ Error writing file 4.4.2 RunI Internal Drive IDA1 Yes 11395 /data/data/com.drivespeed/files/ T21# 4.4.4 RunS Internal SD SDI21 Fail 11756 /storage/emulated/0/ Error writing file RunI Internal Drive ID21 Yes 11756 /data/data/com.drivespeed/files/ T22 5.0.2 RunS Internal SD SD22 Fail 12131 /storage/emulated/0/ Error writing file RunI Internal Drive ID22 Yes 12136 /data/data/com.drivespeed/files/ # No external SD slot Cached File Tests 8 MB Files - MB/second Write1 Write2 Write3 Read1 Read2 Read3 T1 ID1 Write 3.2 3.2 3.4 8.9 64.5 149.5 Read only 7.8 6.1 5.9 T2 ID2 Write 3.7 3.8 3.7 299.6 239.7 349.5 Read only 17.4 22.3 22.1 T4 ID4 Write 43.4 44.1 64.8 113.0 131.4 142.6 Read only 5.1 5.1 5.3 T7 ID7 Write 163.0 91.4 79.4 287.7 342.9 285.6 Read only 41.7 42.8 39.0 SDI7 Write 88.5 94.4 51.1 115.3 115.7 118.2 Read only 23.3 25.9 24.7 T21 ID21 Write 113.7 208.5 149.7 769.7 902.5 1026.0 Read only 102.9 104.0 103.6 T22 ID22 Write 287.0 289.3 171.0 869.9 806.3 808.1 Read only 127.7 145.7 139.9 A1 IDA1 Write 275.4 276.5 275.4 1108.3 1059.0 1260.3 Read only 155.7 128.6 156.2 Note that T21, T22 and A1 did not allow uncached writing. Read after reboot provides the only results possible.

With later versions of Android or system hardware, the internal drive could have the largest part operating as an SD drive and the remainder as a cached drive. The directory path used was also found to vary on different systems. DriveSpeed2 starts with an input request to type in the path. This can normally be found via a FileBrowser app. Then there are Run and Restart buttons, the latter to correct a false entry or to select a different drive. There is also a Save button to Email results (to me or/and whoever). These new procedures also allowed USB connected devices to be selected (in some cases).

Following are paths identified, by DriveSpeed2, for external SD drives and USB devices. Results are included in later comparisons.

The benchmark can be downloaded from the links DriveSpeed and DriveSpeed2. Below are examples of results. These include the usual configuration details (see above). Drive capacity and paths used for later example results are also provided.

File Paths and Drive Capacity System See Android Drive MB Free Path T4 4.0.3 External SD SD3 15258 14906 /mnt/sdcard/external_sdcard/ T11 4.2.2 External SD SD3 15258 14906 /mnt/extsd/ T11 4.2.2 USB SD SD3 15258 14906 /mnt/udisk/ T11 4.2.2 USB3 SD SD3 15258 14906 /mnt/udisk/ T22 5.0.2 External SD SD3 15258 14687 /storage/sdcard1 T2 2.3.4 USB SD SD4 15185 13869 /mnt/sdb/sdb1/ T11 4.2.2 External SD SD4 15185 13869 /mnt/extsd/ T11 4.2.2 USB SD SD4 15185 13869 /mnt/udisk/ T11 4.2.2 USB3 SD SD4 15185 13869 /mnt/udisk/ T2 2.3.4 Internal SD SDI2 2740 2629 /mnt/flash/ T11 4.2.2 Internal SD SDI11 12757 9788 /sdcard/ T1 2.2 USB stick USBS1 7688 7029 /udisk/ T2 2.3.4 USB stick USBS1 7688 7019 /mnt/sda/sda1/ T4 4.0.3 USB stick USBS1 7688 7019 /mnt/sda1/ T11 4.2.2 USB stick USBS1 7688 7036 /mnt/udisk/ T22 5.0.2 USB Stick USBS3 6513 6030 /storage/usbotg/usbotg-sda3/ S3 is a Class 10 card with minimum 24 MB/second reading and 10 MB/second writing. S4 is a Class 10 card at up to 95 MB/second reading and 90 MB/second writing. Other cards are Class 4

So USB 3, on the tablet, produces by far the best uncached large file performance here, at an average of about half the maximum specification, but with wide variations. It is also the fastest on random writing and equivalent to the best on random reading. Then, dealing with small files, it is amongst the fastest.

Large Files MB/sec 16 MB Files, ## 8 MB Write1 Write2 Write3 Read1 Read2 Read3 T1 Ext SD1 3.4 4.2 4.2 8.7 8.7 8.3 T2 Ext SD2 3.4 3.4 3.4 7.6 7.5 7.5 T4 Ext SD3 5.6 6.3 6.3 10.5 10.7 10.8 T11 Ext SD3 5.4 8.3 8.7 20.7 20.6 20.7 T11 USB2 SD3 5.6 8.1 8.1 16.8 16.8 16.9 T11 USB3 SD3 7.1 8.6 8.3 17.2 17.2 17.5 T22 Ext SD3 2.6 3.7 3.7 20.5 20.5 20.5 T2 USB2 SD4 11.6 11.7 11.9 28.9 30.2 29.9 T11 Ext SD4 12.0 11.6 11.4 21.7 21.8 21.9 T11 USB2 SD4 14.0 17.7 18.5 25.9 26.1 25.9 T11 USB3 SD4 18.2 24.8 25.2 59.0 36.1 36.9 T1 USB2 USBS1 1.1 1.1 0.9 8.5 4.4 8.3 T2 USB2 USBS1 2.6 2.6 3.1 11.5 12.1 11.0 T4 USB2 USBS1 2.3 2.6 2.3 8.3 9.6 9.5 T11 USB2 USBS1 2.8 3.0 3.0 11.8 12.5 12.4 T11 USB2 USBS2 8.5 7.9 7.9 22.3 21.4 20.6 T11 USB3 USB3S1 46.6 49.5 50.3 107.2 87.7 66.7 T22 USB2 USBS3 2.5 4.7 4.5 20.2 21.1 20.5 UPC USB2 USBS2 11.9 12.0 12.3 30.9 31.5 31.5 UPC USB2 USB3S1 27.9 26.9 28.4 38.1 38.9 38.9 T2 Int SDI2 4.6 4.9 5.2 22.8 22.8 15.3 T4 Int SDI4 10.7 11.1 11.2 24.7 24.9 23.7 T11 Int SDI11 8.9 16.6 20.0 51.0 49.1 53.7 Random Access milliseconds Random Write Read From MB 4 8 16 4 8 16 T1 Ext SD1 58.32 22.08 196.90 0.10 0.26 1.28 T2 Ext SD2 3.80 23.62 20.08 0.04 0.03 0.93 T4 Ext SD3 8.79 12.64 6.00 0.04 0.04 0.57 T11 Ext SD3 4.53 21.43 8.45 0.01 0.01 0.59 T11 USB2 SD3 8.35 4.25 20.65 0.02 0.03 0.77 T11 USB3 SD3 8.34 22.46 5.76 0.02 0.02 0.74 T22 Ext SD3 4.65 4.91 18.23 0.01 0.01 0.66 T2 USB2 SD4 2.40 5.02 3.28 0.01 0.01 0.03 T11 Ext SD4 3.50 3.34 2.69 0.01 0.01 0.48 T11 USB2 SD4 2.93 2.90 3.34 0.01 0.01 0.44 T11 USB3 SD4 3.49 2.60 2.03 0.01 0.01 0.05 T1 USB2 USBS1 361.65 389.22 384.42 1.14 0.07 1.06 T2 USB2 USBS1 36.26 208.72 344.72 0.03 49.56 1.16 T4 USB2 USBS1 53.51 112.59 316.58 3.39 1.69 0.92 T11 USB2 USBS1 29.41 206.32 220.73 0.02 50.90 1.20 T11 USB2 USBS2 3.94 10.40 11.06 0.01 0.01 0.69 T11 USB3 USB3S1 0.95 1.08 0.91 0.01 0.01 0.06 T22 USB2 USBS3 0.68 0.86 1.08 0.00 0.00 0.32 UPC USB2 USBS2 5.56 3.31 8.48 0.51 0.50 0.50 UPC USB2 USB3S1 0.93 0.70 0.78 0.51 0.51 0.50 T2 Int SDI2 2.27 2.34 2.95 0.01 0.01 0.02 T4 Int SDI4 2.60 2.97 2.95 0.01 0.01 0.27 T11 Int SDI11 2.05 2.5 1.92 0.01 0.01 0.01 Small Files milliseconds 200 Files Write Read Delete File KB 4 8 16 4 8 16 secs T1 Ext SD1 47.06 33.10 41.39 1.80 2.48 3.31 0.852 T2 Ext SD2 23.33 29.48 35.71 1.13 1.65 2.81 0.962 T4 Ext SD3 29.69 47.67 36.08 1.48 3.39 3.38 1.439 T11 Ext SD3 32.55 32.24 33.47 1.61 1.82 2.39 1.750 T11 USB2 SD3 24.09 28.96 33.17 1.94 2.19 2.60 0.926 T11 USB3 SD3 25.69 35.26 33.95 1.91 2.15 2.58 0.926 T22 Ext SD3 59.14 44.59 33.61 1.90 2.16 2.52 2.099 T2 USB2 SD4 16.13 16.18 21.95 1.32 1.38 1.73 0.318 T11 Ext SD4 15.83 11.65 18.91 0.91 1.26 1.93 0.461 T11 USB2 SD4 12.71 11.04 15.27 1.30 1.45 1.75 0.278 T11 USB3 SD4 10.33 11.42 15.86 1.25 0.71 1.14 0.401 T1 USB2 USBS1 Timeout T2 USB2 USBS1 42.31 29.23 29.92 2.63 2.92 2.98 1.594 T4 USB2 USBS1 53.71 30.00 34.22 2.57 4.33 5.38 1.845 T11 USB2 USBS1 35.85 23.11 25.17 2.59 2.93 3.61 1.242 T11 USB2 USBS2 28.56 24.85 29.54 1.39 1.56 1.91 0.937 T11 USB3 USB3S1 8.02 8.31 6.19 0.53 0.57 1.33 0.271 T22 USB2 USBS3 11.79 13.76 13.23 0.60 1.54 1.97 0.272 UPC USB2 USBS2 26.79 23.43 22.12 0.67 0.82 1.01 0.014 UPC USB2 USB3S1 10.51 10.50 10.64 0.57 0.69 0.76 0.015 T2 Int SDI2 10.28 10.25 14.60 0.79 1.15 1.43 0.161 T4 Int SDI4 1.29 4.62 5.40 0.16 0.56 0.92 0.075 T11 Int SDI11 11.10 12.90 14.40 0.62 0.94 1.38 0.450

Following shows results, measuring MHz whilst running MemSpeed Benchmark, whose results were proportional to MHz. For comparative benchmarking, running continuously at maximum MHz is desirable.

################################################## T11 Samsung EXYNOS 5250 2.0 GHz Cortex-A15, Android 4.2.2 Energy Saving Off MemSpeed Total Elapsed Time 10.9 seconds Android Java CPU MHz 13-Aug-2013 16:55:50 0.00 1000 1.02 1000 2.08 1000 3.11 1000 4.16 1000 5.18 1000 6.24 1000 7.29 1000 8.32 1700 9.34 1200 10.35 1700 11.36 1700 12.38 1700 13.40 1700 14.42 1700 15.45 1700 16.48 1700 17.50 1700 18.54 1000 19.59 1000 20.64 1000 21.67 1000 22.72 1000 23.76 1000 24.82 1000 25.87 1000 26.93 1000 27.98 1000 29.04 1000 30.08 1000 Running Finished 13-Aug-2013 16:56:22 Energy Saving On MemSpeed Total Elapsed Time 11.9 seconds Android Java CPU MHz 14-Aug-2013 11:12:55 0.00 1000 1.02 1000 2.05 1000 3.08 1000 4.11 1000 5.14 1000 6.20 1000 7.23 1000 8.24 1000 9.26 1000 10.28 1000 11.30 1000 12.32 1000 13.34 1000 14.36 1000 15.40 1000 16.43 1000 17.46 1000 18.49 1000 19.52 1000 20.56 1000 21.59 1000 22.62 1000 23.65 200 24.72 1000 25.76 1000 26.80 1000 27.83 1000 28.89 1000 29.92 1000 Running Finished 14-Aug-2013 11:13:26 ################################################## T7 ARM Cortex-A9 1300 MHz, Android 4.1.2 Battery Power MemSpeed Total Elapsed Time 11.7 seconds Android Java CPU MHz 14-Aug-2013 09:11:23 0.00 1000 1.03 475 2.06 760 3.09 1300 4.13 1300 5.17 1300 6.31 640 7.34 1200 8.36 1200 9.37 1200 10.39 1200 11.40 1200 12.42 1200 13.43 1200 14.45 1200 15.47 1200 16.49 1200 17.51 1200 18.53 1200 19.57 1000 20.60 760 21.62 1200 22.66 760 23.68 475 24.71 1300 25.74 475 26.78 475 27.82 475 28.85 475 29.89 475 Running Finished 14-Aug-2013 09:11:54 ################################################## T4 ARM Cortex-A9 1500 MHz, Android 4.0.3 CPU Development Performance Setting MemSpeed Total Elapsed Time 13.0 seconds Android Java CPU MHz 14-Aug-2013 16:26:27 0.00 1200 1.02 1200 2.04 1200 3.06 1200 4.07 1200 5.09 1200 6.12 1200 7.13 1200 8.15 1200 9.17 1200 10.18 1200 11.20 1200 12.22 1200 13.25 1200 14.27 1200 15.30 1200 16.32 1200 17.34 1200 18.37 1200 19.40 1200 20.44 1200 21.46 1200 22.47 1200 23.49 1200 24.51 1200 25.52 1200 26.54 1200 27.56 1200 28.61 1200 29.63 1200 Running Finished 14-Aug-2013 16:26:58 CPU Development Normal MHz Setting MemSpeed Total Elapsed Time 13.6 seconds Android Java CPU MHz 14-Aug-2013 16:21:44 0.01 288 1.08 192 2.16 192 3.25 96 4.42 192 5.66 288 6.71 288 7.84 192 8.93 384 9.97 864 10.99 1200 12.01 1200 13.03 1200 14.05 1200 15.07 1200 16.10 1200 17.12 1200 18.14 1200 19.17 1200 20.20 1200 21.22 1200 22.24 1104 23.26 720 24.29 336 25.34 144 26.46 144 27.57 144 28.69 144 29.81 144 30.92 144 Running Finished 14-Aug-2013 16:22:16

Initial loading times on Android tablet T2 were really slow, using the default browser. Opera, with high speed claims, was installed but only managed to speed up loading times of the small GIF files. T1 tablet, with the older CPU, provided some faster results than PCs with Windows, but failed to display the 1 MB GIF file. A broadband speed tester confirmed the slow T2 speed at 0.6 Mbps whilst a Linux desktop PC produced 8.5 Mbps.

Loading Time Seconds MHz OS 1 MB BMP 1 MB GIF 1 MB JPG 400 GIF Wireless Tablet T1 ARM 926EJ 800 Android 2.2 2.5-2.8 2.5-2.6# 2.3-2.7 6.5-7.4 Tablet T2 ARM v7-A9 800 Android 2.3.4 13.8-14.4 12.9-14.3 13.4-14.8 11.4-12.3 Tablet T2 ARM v7-A9 800 Andr 2.3.4 OP 13.5-14.3 13.0-14.8 13.2-13.7 5.5-6.0 Tablet T4 ARM v7-A9 1500 Android 4.0.3 2.0-2.3 2.1-2.5 2.0-2.4 3.9-5.2 Netbook Atom 1666 WinXP IE 5.5-5.8 2.5-4.1 2.6-3.2 7.4-8.0* Netbook Atom 1666 Abuntu FF 1.1-2.3 1.1-2.2 1.2-2.6 4.6-6.6 Laptop Core 2 1833 Win Vista IE 3.3-3.7 3.2-3.4 3.4-3.6 20.7-22.6 Laptop Core 2 1833 Abuntu FF 1.4-2.4 1.3-1.3 1.2-1.8 4.9-5.2 Wired Desktop 1 Core 2 1600 Abuntu FF 2.2-2.7 1.8-2.9 1.8-1.9 4.6-4.6 Desktop 1 Core 2 2400 Abuntu FF 1.9-2.3 1.1-1.4 1.2-1.4 4.6-4.6 Desktop 2 Phenom 3000 Win 7 IE 2.5-4.3 2.4-3.0 2.4-2.5 4.7-4.8 Desktop 2 Phenom 3000 Win 7 FF 2.4-2.7 2.5-3.0 3.5-2.7 5.3-6.1 Desktop 2 Phenom 3000 Win 7 GC 2.3-2.7 2.5-3.0 2.5-2.6 5.1-6.1 OP = Opera, IE = Internet Explorer, FF = FireFox, GC = Google Chrome # = no image display, * = stopwatch as timer did not work properly

 T1      Device TTFone M013S 10.1 inch tablet, 300-800 MHz VIA 8650
         Screen pixels w x h 600 x 1024
         Android Build Version      2.2
         Processor        : ARM926EJ-S rev 5 (v5l)
         BogoMIPS        : 797.97
         Features        : swp half thumb fastmult edsp java 
         CPU part        : 0x926
         Linux version 2.6.32.9

 T2      Device WayTeq xTAB-70 7 inch tablet, 800 MHz Cortex-A9
         Screen pixels w x h 600 x 800 
         Android Build Version      2.3.4
         Processor     : ARMv7 Processor rev 1 (v7l)
         BogoMIPS     : 2035.71
         Features : swp half thumb fastmult vfp edsp neon vfpv3 
         CPU part   : 0xc09                    - Cortex-A9
         Linux version 2.6.34

 T3      Device Samsung P7500
         Screen pixels w x h 1280 x 752 
         Android Build Version 3.2
         Processor  : ARMv7 Processor rev 0 (v7l)
         processor  : 0  BogoMIPS : 1998.84
         processor  : 1  BogoMIPS : 1998.84
         Features   : swp half thumb fastmult vfp edsp vfpv3 vfpv3d16 
         CPU part   : 0xc09                    - Cortex-A9
         Linux version 2.6.36.3

 T4      Device Miumiu w17 Pro 7 inch tablet, dual 1500 MHz  Cortex-A9
         Screen pixels w x h 600 x 976 
         Android Build Version      4.0.3 - Ice Cream Sandwich
         Processor  : ARMv7 Processor rev 0 (v7l)
         processor  : 0  BogoMIPS : 2393.70
         processor  : 1  BogoMIPS : 2393.70
         Features   : swp half thumb fastmult vfp edsp neon vfpv3 
         CPU part   : 0xc09                    - Cortex-A9
         Hardware   : Amlogic Meson6 g04 customer platform
         Linux version 3.0.8

 T5      Device Ainol Novo 7 Paladin Tablet, 1 GHz MIPS CPU, ARM emulation
         Screen pixels w x h 480 x 800
         Android Build Version      4.0.1
         system type : JZ4770
         processor : MIPS-compatible processor JZ4770
         cpu model : Ingenic Xburst
         BogoMIPS : 1005.97
         Features : fpu mxu dsp lowpower
         CPU implementer : Ingenic
         CPU architecture : MIPS
         Hardware : npm702
         Linux version 2.6.32.9

 T6      Device Asus Transformer TF700
         Screen pixels w x h 1920 x 1128
         Android Build Version      4.0.3
         Processor : ARMv7 Processor rev 9 (v7l)
         processor : 0  BogoMIPS : 1993.93
         processor : 1  BogoMIPS : 1993.93
         processor : 2  BogoMIPS : 1993.93
         processor : 3  BogoMIPS : 1993.93
         Features  : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0xc09                    - Cortex-A9
         CPU revision : 9
         Hardware : cardhu                   - nVidia Tegra 3
         Linux version 2.6.39.4

 T7      Device Google Nexus 7 quad core CPU 1.3, GHz 1.2 GHz > 1 core
         RAM 1 GB DDR3L-1333 Bandwidth 5.3 GB/sec
         Screen pixels w x h 1280 x 736 MHz 
         Twelve-core Nvidia GeForce ULP graphics 416 MHz
         Android Build Version      4.1.2
         Processor : ARMv7 Processor rev 9 (v7l)
         processor : 0  BogoMIPS : 1993.93
         processor : 1  BogoMIPS : 1993.93
         processor : 2  BogoMIPS : 1993.93
         processor : 3  BogoMIPS : 1993.93
         Features  : swp half thumb fastmult vfp edsp neon vfpv3 tls 
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant     : 0x2
         CPU part        : 0xc09             - Cortex-A9
         CPU revision    : 9
         Hardware        : grouper           - nVidia Tegra 3 T30L
         Revision        : 0000
         Linux version    3.1.10

 T7a     Device Google Nexus 7 
         Android Build Version      4.4.2

 T8      Allwinner A13-MID, 1 GHz ARM Cortex-A8 
         Internal Drive MB    1007 Free     917
         SD Card        MB    5455 Free    4575
         Screen pixels w x h 800 x 432
         Android Build Version      4.0.4
         Processor : ARMv7 Processor rev 2 (v7l)
         BogoMIPS : 1001.88
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc08
         CPU revision : 2
         Hardware : sun5i
         Revision : 0000
         Linux version 3.0.8 

 T9      Device WM8650 800 MHz
         Screen pixels w x h 800 x 480
         Android Build Version      2.2
         Processor        : ARM926EJ-S rev 5 (v5l)
         BogoMIPS        : 797.97
         Features        : swp half thumb fastmult edsp java 
         CPU implementer : 0x41
         CPU architecture: 5TEJ
         CPU variant     : 0x0
         CPU part        : 0x926
         Hardware        : WMT
         Linux version 2.6.32.9

 T11    Urbetter Voyo A15, Samsung EXYNOS 5250 Dual core 2.0 GHz Cortex-A15, 
        Mali-T604 GPU, 2 GB DDR3-1600 RAM, dual channel, 12.8 GB/s
        Screen pixels w x h 1920 x 1032 
        Android Build Version      4.2.2  - Jelly Bean
        Processor       : ARMv7 Processor rev 4 (v7l)
        processor       : 0
        BogoMIPS        : 992.87
        processor       : 1
        BogoMIPS        : 997.78
        Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
                          idiva idivt 
        CPU implementer : 0x41
        CPU architecture: 7
        CPU variant     : 0x0
        CPU part        : 0xc0f
        CPU revision    : 4
        Hardware        : SMDK5250
        Linux version 3.4.35Ut


 T12     Samsung GaIaxy Note 2, Quad core 1.6 GHz Cortex-A9
         Screen pixels w x h 720 x 1280
         Android Build Version      4.1.2
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0 BogoMIPS : 1592.52
         processor : 2 BogoMIPS : 2189.72
         processor : 3 BogoMIPS : 2189.72
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         CPU revision : 0
         Chip revision : 0020
         Hardware : SMDK4x12
         Revision : 000b
         Linux version 3.0.31

 T13     Samsung Galaxy Note 1 Dual Core 1.4 GHz Cortex-A9
         Screen pixels w x h 800 x 1280
         Android Build Version      4.1.2
         Processor : ARMv7 Processor rev 1 (v7l)
         processor : 0 BogoMIPS : 1592.52
         processor : 1 BogoMIPS : 1990.65
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0xc09
         CPU revision : 1
         Hardware : SMDK4210
         Revision : 0008
         Linux version 3.0.31

 T14     PD10 Dual Core ARM Cortex A9 1.5 GHz
         Screen pixels w x h 1280 x 752
         Android Build Version      4.0.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0, 1
         BogoMIPS : 3214.95
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         Hardware : RK30board
         Linux version 3.0.8+

 T16     Iconbit Nettab Skat RX, Quad Core Cortex-A9, 1.8 GHz
         Screen pixels w x h 1024 x 720
         Android Build Version      4.1.1
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0, 1, 2, 3
         BogoMIPS : 2015.34
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         CPU revision : 0
         Hardware : RK30board
         Revision : 0000
         Linux version 3.0.36

 T17     T733 Cortex-A8, 1.2 GHz
         Screen pixels w x h 480 x 752
         Android Build Version      4.2.1
         Processor : ARMv7 Processor rev 2 (v7l)
         BogoMIPS : 1001.88
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc08
         CPU revision : 2
         Hardware : sun5i
         Revision : a13b
         Linux version 3.0.8

 T19     Amazon KFAPWI Kindle Fire HDX 9" Quad Core Qualcomm Snapdragon 800 2.2 GHz
         Screen pixels w x h 1600 x 2438 
         Android Build Version      4.4.3
         Processor       : ARMv7 Processor rev 0 (v7l)
         processor       : 0, 1, 2, 3
         BogoMIPS        : 38.40
         Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls 
                           vfpv4 idiva idivt
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant     : 0x2
         CPU part        : 0x06f
         CPU revision    : 0
         Hardware        : Qualcomm MSM8974 
         Revision        : 0000
         Linux version 3.4.0-perf (gcc version 4.7) 

 T20     iRulu X1 Tablet, Quad Core 1.5 GHz Cortex A9
         Screen pixels w x h 600 x 976
         Android Build Version      4.4.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0, 1, 2, 3
         BogoMIPS : 2015.34
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         CPU revision : 0
         Hardware : RK30board
         Revision : 0000
         Linux version 3.0.36+ (gcc version 4.6)

 T21     Kindle Fire HDX 7, 2.2 GHz  Quad Core Qualcomm Snapdragon 800 (Krait 400)
         Measured GHz 2.15, l1 16 KB/Core, L2 2048 KB/Core  
         2 x 32 Bit LPDDR3-1866 Memory, 14.9 GB/s, GPU Qualcomm Adreno 330, 578 MHz
         Device Amazon KFTHWI
         Screen pixels w x h 1200 x 1803 
         Android Build Version      4.4.3
         Processor       : ARMv7 Processor rev 0 (v7l)
         processor       :  0, 1, 2, 3
         BogoMIPS        : 38.40
         Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls 
                           vfpv4 idiva idivt 
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant     : 0x2
         CPU part        : 0x06f
         CPU revision    : 0
         Hardware        : Qualcomm MSM8974
         Revision        : 0000
         Linux version 3.4.0-perf (gcc version 4.7) 

 T22     Lenovo Tab 2 A8-50, 1.3 GHz quad core 64 bit MediaTek ARM Cortex-A53 
         1 GB LPDDR3, GPU Mali T720  MP2
         Device LENOVO Lenovo TAB 2 A8-50F
         Screen pixels w x h 800 x 1216
         Android Build Version      5.0.2
         Processor : AArch64 Processor rev 3 (aarch64)
         processor : 0, 1, 2
         BogoMIPS  : 26.0
         Features : fp asimd aes pmull sha1 sha2 crc32
         CPU implementer : 0x41
         CPU architecture: AArch64
         CPU variant : 0x0
         CPU part : 0xd03
         CPU revision : 3
         Hardware : MT8161
         Linux version 3.10.65 

 T24     Kindle Fire 6, qual core Cortex-A15(/A7?), 1.5 GHz
         Device Amazon KFARWI
         Screen pixels w x h 800 x 1280 
         Android Build Version      4.4.3
         T8135
         Revision	: 000f 000a
         Processor   0, 1
         BogoMIPS	: 31.81
         Features	: swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
                          vfpv4 idiva idivt 
         CPU implementer	: 0x41
         CPU architecture: 7
         CPU variant	: 0x0
         CPU part	: 0xc07
         CPU revision	: 3
         Processor	: ARMv7 Processor rev 2 (v7l)
         processor	: 2, 3
         BogoMIPS	: 35.06
         Features	: swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
                          vfpv4 idiva idivt 
         CPU implementer	: 0x41
         CPU architecture: 7
         CPU variant	: 0x3
         CPU part	: 0xc0f
         CPU revision	: 2
         Hardware	: M
         Linux version 3.10.20

 P1      Device Motorola Milestone 1 CyanogenMod 7 ROM overclocked
         Screen pixels w x h 854 x 480
         Android Build Version      2.3.5
         Processor : ARMv7 Processor rev 3 (v7l)
         BogoMIPS : 598.90
         Features : swp half thumb fastmult vfp edsp neon vfpv3 
         CPU part : 0xc08                       - Cortex-A8
         Linux version 2.6.32.9

 P2      Device Samsung Galaxy s
         Screen pixels w x h 480 x 800
         Android Build Version      2.2
         Processor : ARMv7 Processor rev 2 (v7l)
         BogoMIPS : 996.00
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU part : 0xc08                       - Cortex-A8
         Linux version 2.6.32.9

 P3      Device Motorola Milestone 3 (XT860)
         Screen pixels w x h 960 x 540
         Android Build Version      2.3.6
         Processor : ARMv7 Processor rev 2 (v7l)
         processor : 0                          - CPU 1 of 2
         BogoMIPS : 598.90                      - too low?
         Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3
         CPU part : 0xc09                       - Cortex-A9         
         Linux version 2.6.35.7

 P4      Device Huawei u8800 - 800 MHz Scorpion CPU - Cortex-A8      
         Screen pixels w x h 480 x 800
         Android Build Version      2.3.5
         Processor : ARMv7 Processor rev 1 (v7l)
         BogoMIPS : 537.39
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU part : 0x00f
         Hardware : HUAWEI U8800 BOARD
         Linux version 2.6.35.7

 P5      Device HTC One X - Quad Core
         Screen pixels w x h 720 x 1184
         Android Build Version      4.0.3
         Processor : ARMv7 Processor rev 9 (v7l4
         processor : 0                          - CPU 1 of 4
         BogoMIPS : 1993.93 
         Features : swp half thumb fastmult vfp edsp neon vfpv3
         CPU part : 0xc09                       - Cortex-A9
         Hardware : endeavoru
         Linux version 2.6.39.4

 P6      Qualcomm Snapdragon S4, 1500 MHz, 1 GB DDR2 RAM
         Device HTC One S Ville - Dual Core 
         CPU MSM8260A? see P8 HTC One S MSM8960
         Screen pixels w x h 540 x 888
         Android Build Version      4.0.3
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0
         BogoMIPS : 13.53
         processor : 1
         BogoMIPS : 13.53
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant : 0x1
         CPU part : 0x04d
         CPU revision : 0
         Hardware : ville
         Revision : 0080
         Linux version 3.0.8-

 P7?     Device not given. [Evidence suggests Marvell technology
         e.g. Marvell's Brownstone Development Platform and 
         Marvell - PJ4Bv7 CPU with CPU implementer :0x56, 
         architecture: 7, CPU part :0x584, rev 2]
         Screen pixels w x h 1280 x 752 
         Android Build Version      4.0.3
         Processor : ARMv7 Processor rev 0 (v7l)
         processor   : 0  BogoMIPS   : 831.32
         processor   : 1  BogoMIPS   : 834.00
         Features: swp half thumb fastmult vfp edsp iwmmxt thumbee neon vfpv3
         CPU implementer    : 0x56
         CPU architecture: 7
         CPU variant        : 0x2
         CPU part           : 0x584
         CPU revision       : 0
         Hardware     : Brownstone2x
         Revision    : 0000
         Linux version 3.0.8, (Marvell GCC 201201)

 P8      Qualcomm Snapdragon S4, 1500 MHz, 1 GB dual channel RAM
         Device HTC One S  - Dual Core 
         CPU MSM8960 see P6 HTC One S MSM8260A?
         Screen pixels w x h 540 x 888
         Android Build Version      4.0.3
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0
         BogoMIPS : 13.53
         processor : 1
         BogoMIPS : 13.53
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant : 0x1
         CPU part : 0x04d
         CPU revision : 0
         Hardware : QCT MSM8960 CDP
         Revision : 0000
         Linux version 3.0.8

 P9      Device Samsung Galaxy s Captivate
         Screen pixels w x h 480 x 800 
         Android Build Version   2.3.5
         Processor : ARMv7 Processor rev 2 (v7l)
         BogoMIPS     : 996.00
         Features  : swp half thumb fastmult vfp edsp thumbee neon vfpv3 
         CPU part : 0xc08                       - Cortex-A8
         Linux version 2.6.35.7

 P10     Qualcomm Snapdragon S4, 1500 MHz, 1 GB dual channel RAM
         Device  HTC One X  - Dual Core
         CPU MSM8960
         Screen pixels w x h 720 x 1184 
         Android Build Version      4.0.3
         Processor       : ARMv7 Processor rev 0 (v7l)
         processor       : 0
         BogoMIPS        : 13.53
         processor       : 1
         BogoMIPS        : 13.53
         Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls 
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant     : 0x1
         CPU part        : 0x04d
         CPU revision    : 0
         Hardware        : elite
         Revision        : 0080
         Linux version 3.0.8

 P11     Samsung Galaxy SIII, Quad Core 1.4 GHz Cortex-A9
         Dual Channel DDR2 RAM
         Screen pixels w x h 720 x 1280
         Android Build Version      4.0.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0  BogoMIPS : 1592.52
         processor : 1  BogoMIPS : 2786.91
         processor : 3  BogoMIPS : 398.13
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         CPU revision : 0
         Hardware : SMDK4x12
         Revision : 000c
         Serial : 3b065f3d4df1bb2d
         Linux version 3.0.15

 P13     Samsung Galaxy GT-I9100 SII Dual core 1.2 GHz Cortex-A9
         Screen pixels w x h 480 x 800
         Android Build Version      4.1.2
         Processor : ARMv7 Processor rev 1 (v7l)
         processor : 0
         BogoMIPS : 1592.52
         processor : 1
         BogoMIPS : 2388.78
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0xc09
         CPU revision : 1
         Hardware : SHW-M250K
         Revision : 000a
         Linux version 3.0.31

 P14     Hawaii? Dual Core Cortex-A9
         Screen pixels w x h 540 x 888 
         Android Build Version      4.2.1
         Processor       : ARMv7 Processor rev 0 (v7l)
         processor       : 0
         BogoMIPS        : 2000.48
         processor       : 1
         BogoMIPS        : 2000.48
         Features        : swp half thumb fastmult vfp edsp neon vfpv3 tls 
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant     : 0x3
         CPU part        : 0xc09       
         CPU revision    : 0
         Hardware        : hawaii
         Revision        : 0000
         Linux version 3.4.5

 P16     LG G2X 512 MB Dual-channel RAM Dual-core Cortex-A9 1 GHz
         Screen pixels w x h 480 x 800
         Android Build Version      2.3.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0 and 1 BogoMIPS : 1998.84
         Features : swp half thumb fastmult vfp edsp vfpv3 vfpv3d16
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x1
         CPU part : 0xc09
         CPU revision : 0
         Hardware : Tegra 2 Development System
         Linux version 2.6.32

 P21     Nexus 4 Quad 1.5 GHz Qualcomm Snapdragon S4, Android 4,4,2
         Screen pixels w x h 768 x 1184 
         Android Build Version      4.4.2
         Processor ARMv7 Processor rev 2 (v7l)
         processor: 0, 1, 2, 3
         BogoMIPS : 13.53
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant     : 0x0
         CPU part        : 0x06f
         CPU revision    : 2
         Hardware        : QCT APQ8064 MAKO
         Revision        : 000b
         Linux version 3.4.0

 P25     Mediacom PhonePad X550U, 1.3 GHz Cortex A7
         Screen pixels w x h 720 x 1280
         Android Build Version      4.2.2
         Processor : ARMv7 Processor rev 2 (v7l)
         processor : 0, 1 ,2
         BogoMIPS : 2439.94 or 2000.48
         Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
                     vfpv4 idiva idivt
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part : 0xc07
         CPU revision : 2
         Hardware : MT6589
         Revision : 0000
         Linux version 3.4.5

 P26     Lenovo a269i, 1.0 GHz Cortex-A7
         Screen pixels w x h 320 x 480
         Android Build Version      2.3.6
         Processor : ARMv7 Processor rev 3 (v7l)
         processor : 0, 1
         BogoMIPS  : 1993.93
         Features  : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
                     vfpv4 idiva idivt 
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part    : 0xc07
         CPU revision  : 3
         Hardware   : MT6572
         Revision   : 0000

 P27     Samsung Galaxy Note 3 SM-N9005, 2.3 GHz Qualcomm Snapdragon 800
         Screen pixels w x h 1080 x 1920 
         Android Build Version      4.4.2
         Processor  : ARMv7 Processor rev 0 (v7l)
         processor  : 0 to 3
         BogoMIPS   : 38.40
         Features   : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
                     idiva idivt 
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant  : 0x2
         CPU part     : 0x06f
         CPU revision : 0
         Hardware     : Qualcomm MSM 8974 (Flattened Device Tree)
         Revision     : 0008
         Linux version 3.4.0

 P28     Nexus 5 2.26 GHz Qualcomm Snapdragon 800 MSM8974
         Screen pixels w x h 1080 x 1776
         Android Build Version      5.0.1
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0 to 3
         BogoMIPS : 38.40
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 
                    idiva idivt
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0x06f
         CPU revision : 0
         Hardware : Qualcomm MSM 8974 HAMMERHEAD (Flattened Device Tree)
         Revision : 000b
         Linux version 3.4.0

 P29     Motorola XT1049, Dual Core 1.7 GHz Snapdragon S4
         Screen pixels w x h 720 x 1184
         Android Build Version      4.4.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0, 1 
         BogoMIPS : 13.53
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
         CPU implementer : 0x51
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0x04d
         CPU revision : 0
         Hardware : msm8960dt
         Revision : 8300
         Device : ghost
         Radio : 4
         Linux version 3.4.42 (gcc version 4.7)

 P31     JSR AM812 Qualcomm MSM 8610 Snapdragon 200, ? GHz 
         Screen pixels w x h 540 x 960
         Android Build Version      4.3
         Processor  : ARMv7 Processor rev 3 (v7l)
         processors : 0, 1, 2, 3
         BogoMIPS   : 38.40
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part : 0xc07
         CPU revision : 3
         Hardware : Qualcomm MSM 8610 (Flattened Device Tree)
         Revision : 0000 

 P32     Samsung GT-I9305 Galaxy S III, Exynos 4412 Quad 1.4 GHz
         Device Samsung GT-I9305
         Screen pixels w x h 720 x 1280
         Android Build Version      4.4.4
         Processor : ARMv7 Processor rev 0 (v7l)
         processor : 0, 1, 3   BogoMIPS : 1592.65
         processor : 2         BogoMIPS : 1592.52
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x3
         CPU part : 0xc09
         CPU revision : 0
         Chip name : EXYNOS4412
         Chip revision : 0011
         Hardware : SMDK4x12
         Revision : 0002
         Linux version 3.0.31

 P33     Sony Xperia Z3+ E6533, Quad-core 1.5 GHz & Quad-core 2 GHz Qualcomm
         Snapdragon 810 64-bit CPU
         Screen pixels w x h 1080 x 1776
         Android Build Version      5.0.2
         Processor : AArch64 Processor rev 1 (aarch64)
         processor : 0 to 7
         Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
         CPU implementer : 0x41
         CPU architecture: 8
         CPU variant : 0x1
         CPU part : 0xd07
         CPU revision : 1
         Hardware : Qualcomm Technologies, Inc MSM8994
         Linux version 3.?10.?49


 P34     LG Optimus L5 II E460, 1 GHz MT6575 ARM Cortex-A9 
         Device LGE LG-E460
         Screen pixels w x h 480 x 800
         Android Build Version      4.1.2
         Processor : ARMv7 Processor rev 10 (v7l)
         BogoMIPS : 1993.93
         Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x2
         CPU part : 0xc09
         CPU revision : 10
         Hardware : MT6575
         Revision : 0005
         Linux version 3.4.0

 P35     Lenovo A859 Quad-core Cortex-A7 1.3 GHz
         GPU Mali-400MP2 
         Screen pixels w x h 720 x 1280
         Android Build Version      4.2.2
         Processor : ARMv7 Processor rev 3 (v7l)
         processor : 0, 1
         BogoMIPS : 2590.72
         Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls 
                    vfpv4 idiva idivt
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part : 0xc07
         CPU revision : 3
         Hardware : MT6582
         Revision : 0000
         Linux version 3.4.5

 A1      Asus K013 MemoPad 7 ME176CEX, 1.86 GHz Atom Intel Atom Z3745 
         d : 0, siblings : 4, core id : 3, cpu cores : 4
         apicid : 6, initial apicid : 6, fdiv_bug : no, f00f_bug : nocoma_bug : no,
         fpu : yes, fpu_exception : yes, cpuid level : 11, wp : yes
         flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
         pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm
         constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf
         nonstop_tsc_s3 pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16
         xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm
         3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid
         tsc_adjust smep erms
         bogomips : 2666.77
         clflush size : 64
         cache_alignment : 64
         address sizes : 36 bits physical, 48 bits virtual
         power management:
         dress sizes : 36 bits physical, 48 bits virtual     
         power management:
         processor : 3
         vendor_id : GenuineIntel
         cpu family : 6
         model : 55
         model name : Intel(R) Atom(TM) CPU  Z3745  @ 1.33GHz
         stepping : 8
         microcode : 0x81b
         cpu MHz : 1862.000
         cache size : 1024 KB
         physical i 
         Linux version 3.10.20

  OR     Screen pixels w x h 800 x 1216
         Android Build Version      4.4.2
         Processor : ARMv7 processor rev 1 (v7l)
         BogoMIPS : 1500.0
         Features : neon vfp swp half thumb fastmult edsp vfpv3
         CPU implementer : 0x69
         CPU architecture: 7
         CPU variant : 0x1
         CPU part : 0x001
         CPU revision : 1
         Hardware : placeholder
         Revision : 0001
         Linux version 3.10.20

  A2     Samsung Galaxy Tab 3 10.1, 1.6 GHz Intel Atom Z2560
         4 x 32 KB L1 cache, 2 x 1 MB L2 cache
         Screen pixels w x h 1280 x 800 
         Android Build Version      4.2.2
         constant_tsc arch_perfmon pebs bts nonstop_tsc aperfmperf 
         nonstop_tsc_s3 pni dtes64 monitor ds_cpl vmx est tm2 ssse3
         xtpr pdcm movbe lahf_lm arat dtherm tpr_shadow vnmi flexpriority
         bogomips        : 3194.88 x 2
         clflush size    : 64
         cache_alignment : 64
         address sizes   : 32 bits physical, 32 bits virtual
         power management:
         vnmi flexpriority
         processor       : 3
         vendor_id       : GenuineIntel
         cpu family      : 6
         model    : 53
         model name      : Intel(R) Atom(TM) CPU Z2560  @ 1.60GHz
         stepping        : 1
         microcode       : 0x10e
         cpu MHz  : 1600.000
         cache size      : 512 KB
         physical id     : 0
         siblings        : 4
         core id  : 1
         cpu cores       : 2
         apicid   : 3
         initial apicid  : 3
         fdiv_bug        : no
         hlt_bug  : no
         f00f_bug        : no
         coma_bug        : no
         fpu      : yes
         fpu_exception   : yes
         cpuid level     : 10
         wp       : yes
         flags    : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
                    mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss 
                    ht tm pbe nx
         Linux version 3.4.34

 A3      Asus Zenfone 5T00J, 1.6 GHz Intel Atom Z2560
         Screen pixels w x h 720 x 1280 
         Android Build Version      4.4.2
         m arat dtherm tpr_shadow vnmi flexpriority
         bogomips        : 3194.88
         clflush size    : 64
         cache_alignment : 64
         address sizes   : 32 bits physical, 32 bits virtual
         power management:
         pl vmx est tm2 ssse3 xtpr pdcm movbe lahf_lm arat dtherm 
            tpr_shadow vnmi flexpriority
         bogomips        : 3194.88
         clflush size    : 64
         cache_alignment : 64
         address sizes   : 32 bits physical, 32 bits virtual
         processor       : 3
         vendor_id       : GenuineIntel
         cpu family      : 6
         model           : 53
         model name      : Intel(R) Atom(TM) CPU Z2560  @ 1.60GHz
         stepping        : 1
         microcode       : 0x110
         cpu MHz         : 1600.000
         cache size      : 512 KB
         physical id     : 0
         siblings        : 4
         core id         : 1
         cpu cores       : 2
         apicid          : 3
         initial apicid  : 3
         fdiv_bug        : no
         f00f_bug        : no
         coma_bug        : no
         fpu             : yes
         fpu_exception   : yes
         cpuid level     : 10
         wp              : yes
         flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge 
                           mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss 
                           ht tm pbe nx constant_tsc arch_perfmon pebs bts 
                           nonstop_tsc aperfmperf nonstop_tsc_s3 pni dtes64 
                           monitor ds_cpl vmx est tm2 ssse3 xtpr pdcm movbe 
                           lahf_l
         Linux version 3.10.20

 B1      ODROID-C1 Quad core 1.5 GHz Cortex-A5, mini motherboard 
         512 KB L2 4 x 32 KB I/D L1, 1 GB RAM
         Device HardKernel Co., Ltd. ODROIDC
         Screen pixels w x h 1600 x 852
         Android Build Version      4.4.2
         Processor : ARMv7 Processor rev 1 (v7l)
         processor : 0, 1 
         BogoMIPS : 3.17
         processor : 2, 3
         BogoMIPS : 2.00
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part : 0xc05
         CPU revision : 1
         Hardware : ODROIDC
         Revision : 000a
         Linux version 3.10.33 (jenkins@build) (gcc version 4.9.2)

 B2      AM812 M2M Module, quad core 1.2 GHz Qualcomm Cortex-A7 
         Device JSR AM812
         Screen pixels w x h 540 x 960
         Android Build Version      4.3
         Processor : ARMv7 Processor rev 3 (v7l)
         processor : 0, 1, 2, 3
         BogoMIPS : 38.40
         Features : swp half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt
         CPU implementer : 0x41
         CPU architecture: 7
         CPU variant : 0x0
         CPU part : 0xc07
         CPU revision : 3
         Hardware : Qualcomm MSM 8610 (Flattened Device Tree)
         Revision : 0000
         Linux version 3.4.0

 EP1     Device Emulator 3 GHz Phenom
                      or 2.4 GHz Core 2
         Screen pixels w x h 240 x 320
         Android Build Version      2.2
         Processor  : ARM926EJ-S rev 5 (v5l)
         BogoMIPS    : 522.64
         Linux version 2.6.29

 ET1     Device Emulator 3 GHz Phenom
         Screen pixels w x h 600 x 1024
         Android Build Version      2.2
         Processor : ARM926EJ-S rev 5 (v5l)
         BogoMIPS  : 530.84
         Linux version 2.6.29

 ET2     Device Emulator 3 GHz Phenom
                      or 2.4 GHz Core 2
         Screen pixels w x h 600 x 1024
         Android Build Version      4.0.3
         Processor       : ARMv7 Processor rev 0 (v7l)
         BogoMIPS : 527.56
         Linux version 2.6.29

 BS1    BlueStacks Emulator on 3 GHz Phenom
        Screen pixels w x h 1024 x 600
        Android Build Version      2.3.4
        processor       : 0
        vendor_id       : AuthenticAMD
        cpu family      : 16
        model           : 4
        model name      : AMD Phenom(tm) II X4 945 Processor
        stepping        : 2
        cpu MHz         : 3013.000
        cache size      : 512 KB
        -
        -
        bogomips        : 26686.25
        Linux version 2.6.38

 BS2    BlueStacks Emulator on 1.83 GHz Core 2 Duo
        Screen pixels w x h 1024 x 600
        Android Build Version      2.3.4
        processor       : 0
        vendor_id       : GenuineIntel
        cpu family      : 6
        model           : 15
        model name      : Intel(R) Core(TM)2 Duo CPU     T5550  @ 1.83GHz
        stepping        : 13
        cpu MHz         : 1828.000
        cache size      : 2048 KB
        -
        -
        bogomips        : 12294.55
        Linux version 2.6.38