MemSpd2K and MemSpeed Benchmark Results On PCs
See Results Index below
Description
MemSpd2K benchmark employs three different sequences of operations, on 64 bit double precision floating point numbers, 32 bit single precision numbers and 32 bit integers via two data arrays:
Sum to register r = r + x [m] * y[m] (Integer + y [m])
Sum to memory x[m] = x[m] + y[m]
Memory to memory x[m] = y[m]
These are executed using assembly code which uses the same instructions as the original MemSpeed benchmark. The memory loading speed is calculated in terms of millions of bytes per second (MB/S). Measurements are made at 4000, 8000, 1600 etc. memory bytes up to 25% of the main RAM size to produce speed ratings via data from different levels of cache and from RAM.
A pre-compiled version of the benchmark can be found in MemSpd2K.zip which also contains the source code, providing further explanatory comments.
MemSpeed can be found in DOSTests.zip - file MDTRDOS.exe.
Then there is My Main Page for other PC benchmarks and results.
The two arrays are allocated with addresses in multiples of 2048 bytes apart. This identifies a design limitation with the Intel P4 CPU, producing false cache flushing and some very slow speeds. The problem did not affect the earlier MemSpeed benchmark, so results for this are also provided.
This problem appears to have been rectified on later P4 CPUs (see P4E) but SSE3DNow benchmark is the preferred option as it uses the same calculations to measure performance (For benchmarks see SSE3DNow.zip and SSE3DNow results.htm, also BusSpd2K results.htm and RandMem results.htm ).
A slight variation of MemSpeed is used in conjunction with a
Linux OpenMP Benchmark and as an
Android Benchmark,
then
Raspberry Pi Benchmarks.htm.
Latest are covered in
Android Native ARM-Intel Benchmarks.htm
and
Android 64 Bit Benchmarks.htm.
Following are example output for both MemSpeed and MemSpd2K on a 1.9 GHz Pentium 4 CPU with PC133 RAM. Variations in performance identify L1 and L2 cache sizes.
It can be seen that some MemSpd2K speeds can be slower on reading data in caches than that from main memory.
A third example probably represents the best performance that could be expected on a May 2014 desktop P, assuming no overclocking.
MemSpeed Results
Memory s=s+x[m]*y[m ]Int+ x[m]=x[m]+y[m] x[m]=y[m]
KBytes Dble Sngl Int Dble Sngl Int Dble Sngl Int
Used MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S
L1 4 5607 2834 6417 9134 4096 5090 4774 2656 3413
8 5689 2852 6320 9433 4000 5125 4769 2627 3466
L2 16 5885 2849 3697 7306 3507 4655 3870 2143 2932
32 5896 2865 3712 7529 3523 4650 3893 2151 2942
64 5909 2872 3683 7420 3514 4664 3908 2152 2937
128 5860 2837 3644 7495 3497 4679 3863 2151 2926
256 2069 1725 2202 1548 1267 1818 772 665 977
RAM 512 843 839 832 544 552 551 273 277 277
1024 834 824 824 539 542 547 270 272 277
2048 816 811 888 531 536 566 266 270 285
MemSpd2K Results
Memory s=s+x[m]*y[m ]Int+ x[m]=x[m]+y[m] x[m]=y[m]
KBytes Dble Sngl Int Dble Sngl Int Dble Sngl Int
Used MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S
4 1549 305 166 1756 1498 1260 3997 1825 1626
8 1740 344 159 2657 1523 1292 4138 1803 1547
16 1722 376 141 1655 1516 1300 4067 1809 1394
32 1727 830 96 2312 1141 1169 3462 1567 1325
64 1719 1022 90 2389 1261 1170 3153 1554 1267
128 1687 842 97 2243 1285 1161 2530 1472 1341
256 1505 634 116 1888 988 1069 2104 1309 1203
512 823 653 300 570 506 561 294 294 288
1024 823 656 299 576 505 562 294 295 289
2048 827 650 299 575 507 563 296 296 295
4096 825 656 299 577 505 566 297 296 296
8192 822 662 301 578 511 567 295 298 297
16384 800 654 300 554 498 548 287 283 286
32768 790 646 301 542 485 537 281 280 279
65536 784 639 305 528 481 530 280 278 278
Core i7 4820K mainly ruuning at 3.9 GHz using Turbo Boost
32 GB 1600 MHz RAM over 4 channels, Windows 8.1
Memory s=s+x[m]*y[m] Int+ x[m]=x[m]+y[m] x[m]=y[m]
KBytes Dble Sngl Int Dble Sngl Int Dble Sngl Int
Used MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S MB/S
L1 4 20385 10312 15486 27497 13882 20125 24835 12456 12347
8 20757 10406 15540 27765 13895 20401 24914 12487 12478
16 20805 10419 15622 27649 13900 20376 25014 12502 12507
32 20837 10409 15620 27787 13823 20378 24112 12498 12478
L2 64 20846 10427 15623 27493 13888 20145 22644 12260 12243
128 20852 10379 15558 27515 13897 20187 23479 12405 12211
256 20829 10380 15627 27003 13866 19975 21146 12058 11995
L3 512 20826 10424 15593 24664 13885 18948 14964 10811 10615
1024 20750 10423 15630 24762 13824 18879 15122 10721 10625
2048 20754 10423 15633 24771 13887 18911 14962 10781 10568
4096 20481 10330 15317 23879 13497 18610 14938 10672 10532
8192 19555 10025 14849 22361 13060 17826 13360 10250 10170
RAM 16384 16340 9264 13242 14314 11028 13304 7333 7599 7581
32768 15927 9333 12964 13882 10785 12863 6995 7365 7343
65536 16036 9226 13031 13939 10932 12893 7006 7388 7380
131072 16251 9371 13134 13946 10989 13076 7089 7405 7375
262144 16287 9391 13067 13971 10984 12991 7100 7368 7363
524288 15998 9335 12869 13904 10959 12956 7060 7294 7353
1048576 16357 9386 13032 13957 10981 12999 7081 7376 7391
Maximum speed 800 MHz x 2 DDR x 8 bus width x 4 channels = 51.2 GB/sec
Multiple cores need to be used for a higher throughput from RAM
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To Start
Results
Separate tables of speeds obtained via L1 cache, L2 cache and RAM are given below. Except when connected via the memory bus, performance via caches tends to be proportional to CPU MHz for a given type of processor. So, only a sample of results are provided. Details of cache sizes, speed and range of CPU MHz can be found in CPUSpeed.htm.
The benchmark is very sensitive to synchronisation between the CPU and memory, so resultant speeds can be different. Large variations are also apparent with different mainboards.
To Start
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MemSpd2K L1 Cache Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
Pentium 100 220 122 145 296 149 156 113 53 52
Pentium Pro 200 892 482 559 896 487 697 782 394 350
Pentium MMX 200 577 303 374 667 335 424 355 153 172
Celeron A 300 1340 725 861 1348 731 1031 1172 590 526
Celeron A 450 2019 1092 1297 2029 933 1546 1766 888 792
Celeron 2 600 2704 1455 1734 2714 1467 2074 2366 1186 1058
Celeron 2 850 3863 2091 2479 3886 2097 2963 3381 1702 1513
Pentium II 400 1803 973 1155 1811 979 1374 1573 793 705
Pentium II 450 2025 1049 1298 2039 1099 1184 1760 892 794
Pentium III 450 1954 1066 1258 1969 1073 1536 1720 862 768
Pentium IIIE 600 2688 1457 1550 2701 1463 2070 2354 1185 1053
Pentium IIIEB 800 3598 1950 2311 3610 1959 2763 3150 1587 1410
Pentium IIIEB 1000 4474 2427 3160 4370 2438 3431 3580 1971 1971
PIII Tualatin 1266 6102 2865 4454 6164 2875 4410 5675 2863 2502
Celeron M 1295 6524 3300 4495 8943 4425 5087 6711 3329 3395
Pentium M 1862 9691 4671 6505 12896 6495 6893 9230 4397 4884
Pentium 4 1800 1703 320 148 2426 1472 1223 3905 1726 1556
Pentium 4 1900 1740 344 159 2657 1523 1292 4138 1803 1547
Pentium 4N 2533 2350 451 222 3919 2060 1736 5353 2214 1767
Pentium 4N 2533 6398 2992 1757 6592 2494 2304 5234 2083 1584
Pentium 4N 2533 6490 2989 1761 6716 2527 2360 5286 2075 1728
Pentium 4N 3066 2711 518 269 3823 1364 1422 3679 1125 1147
Pentium 4E 3000 7830 3885 11355 13096 5704 6472 8560 5469 5737
Pentium 4N 3678 2644 373 153 3609 2871 2554 7734 3643 3187
Atom M 1600 3337 1776 4577 1869 941 4188 1322 669 2094
Core 2 Duo M 1830 9210 4687 6396 12591 5301 7036 11307 3597 5561
Celeron C2 M 2000 10405 5002 7373 13858 6202 7322 12357 4005 6198
Core 2 Duo 1 CP 2400 12556 6122 8921 16749 7683 9510 14924 4667 7536
Core i5 2467M @@@@ 11480 5804 8847 15882 7783 11275 13364 6873 7021
Core i7 1 CP **** 15596 7816 11669 11076 5534 11681 11750 5878 9169
Core i7 3820 &&&& 20161 10106 15149 26951 13504 19427 24073 12136 12067
Core i7 4820K $$$$ 20757 10406 15540 27765 13895 20401 24914 12487 12478
Cyrix M300 225 242 143 296 260 130 284 215 108 148
AMD K62 450 977 524 1573 790 395 1419 588 323 1156
AMD K63 400 864 469 1399 700 354 1267 451 233 340
Duron 700 2733 1379 2756 4513 2441 2958 3193 1573 1993
Duron 950 3738 1879 3755 6446 3338 4222 4325 2145 2717
Athlon 550 2145 1084 1873 3637 1902 2310 2494 1234 1549
Athlon Tbird 750 2937 1485 2965 5072 2631 3179 3436 1690 2139
Athlon Tbird 850 3330 1682 3360 5752 2981 3594 3895 1918 2422
Athlon Tbird 1000 3913 1980 3952 6767 3507 4243 4575 2244 2841
Athlon Tbird 1200 4703 2366 4726 8096 4197 5071 5275 2915 3417
Athlon Tbird 1200 4728 2391 4770 8167 4235 5123 5519 2724 3452
Athlon Tbird 1333 5225 2634 5270 9027 4679 5659 6112 3009 3814
Athlon 4 1533 5916 3036 6065 10590 5382 6937 7302 3733 4327
Ath4 Barton 1800 6779 3538 7054 12488 6252 8087 8506 4345 5111
Athlon XP 1733 6811 3445 6880 12114 6102 7854 8267 4225 4959
Turion 64 M 1900 7325 3736 7513 14610 6430 8063 9224 4598 4879
Athlon XP 2080 8148 4114 8229 14479 7313 9412 9892 5057 5950
Athlon XP 2167 8514 4307 8593 15105 7637 9829 10334 5284 6201
Opteron 2000 7869 3941 7892 15565 7005 8430 9884 4969 5911
Athlon 64 1995 7881 3925 7879 15413 6974 8485 9834 4985 5925
Athlon 64 2210 8656 4379 8601 17241 7771 9207 10801 5525 6636
Phenom II 3000 11821 5930 11931 21669 11792 13040 14829 7317 8731
**** 2.8 GHz i7 930, running at up to 3.06 GHz using Turbo Boost
@@@@ 1.6 GHz i5 2467M, running at up to 2.30 GHz using Turbo Boost
&&&& 3.6 GHz i7 3820, running at up to 3.80 GHz using Turbo Boost
$$$$ 3.7 GHz i7 4820K, running at up to 3.90 GHz using Turbo Boost
To Start To Index
MemSpeed L1 Cache Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
AMD 80386 40 7 4 16 5 3 11 4 2 9
80486 66 37 20 71 34 18 64 29 16 30
Pentium 100 267 148 170 313 162 197 105 53 53
Pentium Pro 200 853 450 624 1034 423 616 843 393 286
Pentium MMX 200 566 303 356 666 335 410 181 92 197
Celeron A 300 1454 684 964 1575 636 954 1351 591 436
Celeron A 450 2170 1030 1442 2393 964 1440 2004 892 653
Celeron 2 600 2917 1363 1927 3199 1274 1904 2679 1180 865
Pentium II 400 1928 904 1265 2107 846 1264 1787 791 578
Pentium II 450 2193 1024 1442 2393 964 1440 2024 892 654
Pentium III 450 2170 1024 1440 2359 954 1425 2008 892 651
Pentium IIIE 600 2901 1361 1902 3167 1272 1900 2691 1188 868
Pentium IIIEB 800 3847 1822 2554 4231 1699 2522 3580 1589 1166
Pentium IIIEB 1000 4870 2276 3151 5315 2142 3189 4497 1985 1449
Pentium 4 1800 5425 2725 6059 8981 3822 4847 4506 2512 3311
Pentium 4 1900 5689 2852 6320 9433 4000 5125 4769 2627 3466
Core i7 4820K 3900 20480 10373 15656 34965 17826 17799 28656 15027 15032
Cyrix P200M 150 164 95 434 153 76 370 128 64 200
Cyrix M330 250 276 160 728 255 128 620 217 109 333
AMD K62 300 661 342 828 504 267 874 436 218 441
AMD K62 450 988 514 1164 756 400 1147 653 327 544
AMD K63 450 988 514 1259 758 399 1361 650 327 677
Duron 700 2745 1382 2755 4437 2004 2217 2800 1851 1579
Duron 950 3724 1881 3769 5929 2738 3003 3775 2497 2148
Athlon 500 1924 981 1961 3103 1431 1564 1959 1299 1118
Athlon 750 2909 1491 2996 4682 2165 2359 2947 1981 1675
Athlon Tbird 850 3292 1686 3386 5370 2450 2692 3380 2227 1927
Athlon 4 1397 5422 2755 5542 8761 4007 4433 5561 3657 3151
Athlon XP 2080 8005 4080 8194 12973 5947 6522 8478 5300 4632
Athlon 64 2210 8640 4393 8775 15415 7693 7321 9881 5818 4990
Phenom II 3000 11807 597t 11954 23693 12529 13342 18511 9510 11805
To Start To Index
MemSpd2K L2 Cache Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
Pentium 100 105 76 87 111 85 84 94 46 46
Pentium Pro 200 667 436 553 377 346 325 286 240 229
Pentium MMX 200 235 170 202 158 143 158 101 68 73
Celeron A 300 909 620 756 747 560 649 402 362 324
Celeron A oc 450 1411 938 1138 1130 857 980 601 537 488
Celeron 2 600 2784 1359 1727 2143 1067 1388 1312 929 942
Celeron 2 850 3657 1894 2356 3395 1526 1946 1656 1355 1274
Pentium II 400 1152 636 728 510 419 541 278 237 271
Pentium II 450 1188 656 715 525 393 521 275 241 220
Pentium III 450 1229 657 733 532 434 561 292 251 285
Pentium IIIE 600 2406 1315 1645 2127 1184 1380 1154 919 887
Pentium IIIEB 800 3710 1821 2317 2870 1449 1857 1747 1300 1258
Pentium IIIEB 1000 4626 2267 2888 3568 1815 2309 2170 1623 1532
PIII Tualatin 1266 5743 2935 3505 5073 2452 2939 2869 2034 1966
Celeron M 1295 6462 3333 3543 4760 3432 3234 3427 2556 2450
Pentium M 1862 9278 4792 5127 6777 4935 4694 4272 3541 3702
Pentium 4 1800 1553 1024 174 2100 1261 1113 3334 1495 1368
Pentium 4 1900 1719 1022 90 2389 1261 1170 3153 1554 1267
Pentium 4N 2533 2034 1669 125 3537 1577 1536 5461 1805 1838
Pentium 4N 2533 6381 2935 1764 5900 2365 2326 5345 2067 1643
Pentium 4N 2533 6421 2975 1828 6167 2387 2709 5504 2034 1612
Pentium 4N 3066 3211 1452 1389 3008 1357 1445 4043 1137 1138
Pentium 4E 3000 7644 3856 4334 8084 4734 6581 6336 4062 4527
Pentium 4N 3678 2298 2182 105 5108 2089 2274 8020 2528 2862
Atom M 1600 2651 1585 3301 1805 914 2972 1338 669 1437
Core 2 Duo M 1830 9357 4725 6168 8651 5609 5872 5943 3760 3807
Celeron C2 M 2000 10581 5289 6996 9569 6291 6564 6529 3905 3799
Core 2 Duo 1 CP 2400 12755 6380 8463 11561 7578 7928 7798 5328 5349
Core i5 2467M @@@@ 11709 5977 8932 15714 7518 11419 13219 6796 7062
Core i7 1 CP **** 15664 7834 11012 11061 5530 11020 11746 5874 6977
Core i7 3820 &&&& 20226 10118 15161 26496 13472 19277 22222 11969 11889
Core i7 4820K $$$$ 20852 10379 15558 27515 13897 20187 23479 12405 12211
Cyrix M300 225 175 115 208 172 104 173 110 90 98
AMD K62 450 434 313 465 292 216 307 175 172 172
AMD K63 400 674 364 747 539 305 702 424 227 317
Duron 700 1477 1073 1007 1373 806 901 947 637 570
Duron 950 1921 1399 1331 1855 1097 1204 1255 837 767
Athlon 550 772 640 639 693 469 559 447 378 345
Athlon Tbird 750 1978 1338 1242 1565 928 1029 1125 746 659
Athlon Tbird 850 2238 1523 1411 1764 1051 1165 1280 845 745
Athlon Tbird 1000 2636 1792 1661 2089 1237 1373 1484 974 876
Athlon Tbird 1200 2756 2102 2028 2482 1475 1630 1840 1249 1048
Athlon Tbird 1200 2935 2139 1988 2445 1442 1618 1727 1150 1016
Athlon Tbird 1333 3533 2382 2210 2786 1650 1823 2009 1325 1173
Athlon 4 1533 3565 2685 2609 3119 1866 2099 2102 1539 1349
Athlon 4 1733 3876 2958 2386 3484 2181 2451 2370 1779 1527
Ath4 Barton 1800 3985 3068 2958 3563 2202 2532 2439 1849 1569
Turion 64 M 1900 4603 3554 3595 3601 2088 3139 2625 1807 1714
Athlon XP 2080 4663 3567 3444 4148 2614 2940 2840 2151 1823
Athlon XP 2167 4869 3722 3595 4364 2733 3058 2973 2247 1913
Dual Opteron 2000 5102 3940 4089 3930 2252 2402 3305 2244 2197
Athlon 64 1995 4944 3946 4219 3938 2250 2422 3343 2252 2217
Athlon 64 2210 4322 4388 4661 4883 2734 3921 3789 2507 2487
Phenom II 3000 11839 6017 11581 14976 10128 10365 8189 6680 6368
**** 2.8 GHz i7 930, running at up to 3.06 GHz using Turbo Boost
@@@@ 1.6 GHz i5 2467M, running at up to 2.30 GHz using Turbo Boost
&&&& 3.6 GHz i7 3820, running at up to 3.80 GHz using Turbo Boost
$$$$ 3.7 GHz i7 4820K, running at up to 3.90 GHz using Turbo Boost
L3 Cache
Phenom II 3000 8530 5808 7261 8091 6890 7350 4355 3787 3807
Core i5 2467M @@@@ 11759 5910 8748 14039 7464 10547 9051 6226 6195
Core i7 1 CP **** 15391 7801 10808 11034 5524 10451 9204 5814 6495
Core i7 3820 &&&& 19730 9980 14787 22746 13090 17301 14401 10074 9885
Core i7 4820K $$$$ 20481 10330 15317 23879 13497 18610 14938 10672 10532
To Start To Index
MemSpeed L2 Cache Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
80486 66 25 15 29 20 13 27 14 10 18
Pentium 100 121 89 100 93 74 82 60 37 43
Pentium Pro 200 665 444 504 396 362 304 291 231 232
Pentium MMX 200 174 171 195 125 165 159 101 69 74
Celeron A 300 987 621 706 788 585 638 418 339 346
Celeron A 450 1472 931 1058 1190 871 964 632 506 524
Celeron 2 600 2795 1377 1606 2554 1274 1408 1351 841 873
Pentium II 400 1028 617 605 552 470 470 273 271 270
Pentium II 450 1196 687 677 556 474 539 272 271 277
Pentium III 450 1249 723 709 602 504 596 294 296 294
Pentium IIIE 600 2387 1331 1521 1851 1275 1417 1194 785 871
Pentium IIIEB 800 3725 1822 2120 3385 1707 1904 1812 1123 1164
Pentium IIIEB 1000 4711 2276 2675 4249 2142 2333 2266 1420 1459
Pentium 4 1800 5638 2729 3536 7104 3346 4433 3735 2048 2808
Pentium 4 1900 5896 2865 3712 7529 3523 4650 3893 2151 2942
Core i7 4820K 3900 20872 10406 15609 33499 17828 17880 23336 13015 13146
Cyrix P200M 150 100 79 196 90 64 157 53 56 79
Cyrix M330 250 144 122 270 133 101 227 78 85 107
AMD K62 300 303 239 393 190 163 271 114 148 155
AMD K62 450 426 306 464 280 208 324 159 159 162
AMD K63 450 719 428 814 661 364 836 599 285 416
Duron 700 1884 1343 1570 1661 1236 1139 1071 744 883
Duron 950 2450 1804 2094 2221 1644 1509 1405 997 1164
Athlon 500 1472 985 966 890 800 899 450 450 450
Athlon 750 1606 1205 1196 894 1058 1060 529 527 527
Athlon Tbird 850 2485 1699 2004 2073 1606 1442 1338 952 1125
Athlon 4 1397 4155 2783 3272 3296 2301 2327 1983 1483 1794
Athlon XP 2080 6157 4129 4925 5289 3337 4824 2919 1842 2640
Athlon 64 2210 8566 4407 6084 7140 3709 5400 4007 2681 3200
Phenom II 3000 11979 5995 11568 15588 10564 10533 8814 6868 6181
L3 Cache
Core i7 4820K 3900 20872 10406 15635 25780 17712 17659 15216 11145 11145
To Start To Index
MemSpd2K RAM Speed Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
Pentium 100 60 49 54 50 44 45 41 26 27
Pentium Pro P0 200 138 134 138 100 85 89 49 51 49
Pentium MMX P0 200 130 107 118 99 81 84 74 56 59
Celeron A P0 300 347 195 230 189 133 142 96 95 95
Celeron A P1 450 611 329 375 300 202 203 152 152 151
Celeron 2 P0 600 418 239 309 255 163 166 137 123 127
Celeron 2 P1 850 658 385 485 338 185 187 180 184 202
Pentium II P1 400 491 257 307 272 196 200 152 152 151
Pentium II P1 450 492 253 305 270 171 187 142 142 142
Pentium III P1 450 503 235 335 300 199 198 161 160 163
Pentium IIIE P1 600 404 305 308 241 152 161 153 124 127
Pentium IIIEB P2 800 771 434 551 313 224 222 157 152 152
Pentium IIIEB P2 1000 821 438 568 325 220 224 156 156 156
Pentium IIIE R1 1000 657 422 521 500 330 353 264 258 261
PIII Tualatin P2 1266 663 630 630 370 368 364 185 188 186
Celeron M 1295 1431 1340 1349 868 814 809 447 446 437
Pentium M DC1 1862 2473 2682 2770 1369 1373 1370 711 697 693
Pentium 4 D1 1800 1240 612 265 861 742 835 462 457 456
Pentium 4 P2 1900 822 662 301 578 511 567 295 298 297
Pentium 4N D1 2533 1469 1102 394 962 870 935 495 494 494
Pentium 4N R2 2533 3052 2407 1650 1643 1582 1566 872 855 847
Pentium 4N DC1 2533 2304 2001 1632 1339 1280 1271 683 673 666
Pentium 4N D1 3066 1650 1356 481 971 923 982 514 514 514
Pentium 4E DC2 3000 3430 3052 3115 2323 2310 2219 1141 1123 1135
Pentium 4N DC2 3678 2533 1266 307 2294 1631 1877 1333 1293 1294
Atom M DCC 1600 2334 1476 2827 1568 884 1693 900 653 901
Core 2 Duo # DC3 2400 1226 1318 1313 900 842 883 478 482 483
Celeron C2 M DC3 2000 3129 3010 2786 1898 1905 1872 946 953 959
Core 2 Duo M DC4 1830 3939 3794 3924 2476 2373 2398 1257 1206 1171
Core 2 Duo * DC3 2400 4816 4761 4828 3068 3085 3081 1568 1539 1547
Core 2 Duo * DC5 2400 5585 5099 5413 3311 3539 3508 1819 1801 1797
Cor i5 2467M DC7 @@@@ 9970 5532 7847 9589 6939 8323 5111 4682 4640
Core i7 DC6 **** 7769 6179 6623 6110 4613 5721 3460 3108 3119
Core i7 3820 DC8 1c &&&& 10241 8460 9658 7408 7047 7280 3756 3703 3698
Core i7 3820 DC8 2c &&&& 15236 8993 12460 12420 10631 11975 6486 6487 6456
Core i7 3820 DC8 4c &&&& 15389 8967 12398 14540 10837 12465 7764 7231 7174
Core i7 4820 DC8 4c $$$$ 16287 9391 13067 13971 10984 12991 7100 7368 7363
Cyrix M300 225 100 78 112 83 65 84 45 42 43
AMD K62 P1 450 219 191 217 142 123 138 74 73 72
AMD K63 P1 400 165 157 171 108 98 110 84 50 50
Duron P2 700 413 264 265 270 217 229 252 171 163
Duron P2 950 305 290 278 294 228 266 258 176 176
Athlon P1 550 296 260 259 247 211 223 186 140 140
Athlon Tbird P2 750 482 274 274 282 225 230 255 177 160
Athlon Tbird P2 1000 313 293 292 303 235 281 238 177 170
Athlon Tbird P2 1200 240 226 228 288 196 215 211 173 155
Athlon Tbird D1 1200 350 331 331 292 269 284 276 187 189
Athlon Tbird D1 1333 384 345 344 378 291 300 344 223 219
Athlon 4 D1 1533 790 764 756 766 674 719 422 393 367
Athlon 4 D1 1733 1172 1148 1154 1033 1002 972 537 533 500
Ath4 Barton #D1 1800 569 562 557 397 397 398 200 198 187
Turion 64 M DC3 1900 2517 2453 2566 2078 1808 1781 1147 1101 1008
Athlon XP D2 2080 1221 1218 1169 960 896 927 523 487 456
Athlon XP D2 2167 1381 1361 1383 1210 1160 1152 634 611 585
Opteron D3 2000 2338 2347 2360 2182 1818 1783 1171 1089 1097
Athlon 64 D3 1995 2708 2691 2742 1653 1623 1643 828 816 719
Athlon 64 DC2 2210 3023 2962 2942 2004 1952 1975 1076 1047 980
Phenom II DC7 3000 4993 4146 4240 4285 3890 4215 2323 2100 2087
Key P1 100 MHz P2 133 MHz
D1 DDR 133 MHz D2 DDR 166 MHz
D3 DDR 200 MHz DC1 Dual Channel DDR 133 MHz
DC2 Dual Channel DDR 200 MHz DC3 DDR2 533 MHz
DC4 DDR2 666 MHz DC5 DDR2 800 MHz
DC6 DDR3 1066 MHz DCC DDR2 533 MHz 1 channel
DC7 DDR3 1333 MHz DC8 DDR3 1600 MHz 1 2 4 channels
R1 RDRAM 400 MHz R2 RDRAM 533 MHz
**** 2.8 GHz i7 930, running at up to 3.06 GHz using Turbo Boost
@@@@ 1.6 GHz i5 2467M, running at up to 2.30 GHz using Turbo Boost
&&&& 3.6 GHz i7 3820, running at up to 3.80 GHz using Turbo Boost
$$$$ 3.7 GHz i7 4820K, running at up to 3.90 GHz using Turbo Boost
# Slow speed examples (Ath4 slow chipset, Core 2 Duo slow nForce 570 chipset)
* Core 2 Duo Intel 965 chipset M = Mobile
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MemSpeed RAM Speed Results in MBytes/Second
s=s+x[m]*y[m] x[m]=x[m]+y[m] x[m]=y[m]
CPU MHz Dble Sngl Int Dble Sngl Int Dble Sngl Int
AMD 80386 40 6 4 11 4 3 8 4 2 7
80486 66 16 12 18 11 9 12 8 7 8
Pentium 100 59 50 54 42 39 41 30 21 22
Pentium Pro P0 200 140 108 123 101 89 89 51 51 49
Pentium MMX P0 200 91 87 95 60 67 67 48 38 38
Celeron A P0 300 397 236 196 200 137 151 101 102 104
Celeron A P1 450 493 358 292 306 207 227 153 154 157
Celeron 2 P0 600 478 179 199 207 126 125 107 77 75
Pentium II P1 400 517 262 234 288 180 182 150 148 158
Pentium II P1 450 499 214 206 285 160 160 143 118 120
Pentium III P1 450 496 242 214 255 163 162 131 128 131
Pentium IIIE P1 600 491 402 359 313 228 218 185 158 162
Pentium IIIEB P2 800 532 377 362 345 239 239 215 172 166
Pentium IIIEB P2 1000 882 356 327 392 209 207 250 147 137
Pentium 4 D1 1800 1395 1428 1371 906 901 910 452 466 467
Pentium 4 P2 1900 843 839 832 544 552 551 273 277 277
Core i7 4820K L3** 3900 20561 10208 15262 24595 16848 17168 14237 10774 10922
L3 cache at 8 MB MemSpeed Max data
Cyrix P200M 150 86 63 114 76 54 76 38 37 37
Cyrix M330 250 120 91 153 113 81 119 60 58 58
AMD K62 P0 300 184 152 190 112 93 115 60 60 60
AMD K62 P1 450 217 189 217 133 117 137 69 69 69
AMD K63 P1 450 213 186 215 154 134 156 79 77 78
Duron P2 700 528 356 377 364 332 332 283 178 222
Duron P2 950 528 377 381 401 352 355 280 180 215
Athlon P1 500 582 363 311 396 337 340 217 153 175
Athlon P1 750 381 340 354 352 312 336 219 187 197
Athlon Tbird P1 850 322 306 291 266 245 246 141 146 139
Athlon XP D2 2080 1318 1200 885 990 907 792 512 438 402
Athlon 64 DC2 2210 3400 3203 3103 2188 2040 2001 1111 1064 1010
Phenom II DC3 3000 4494 3768 3570 4045 3550 3733 2409 1937 1924
Key P1 100 MHz P2 133 MHz
D1 DDR 133 MHz D2 DDR 166 MHz
D3 DDR 200 MHz DC1 Dual Channel DDR 133 MHz
DC2 Dual Channel DDR 200 MHz R1 RDRAM 400 MHz
DC3 DDR3 1333 MHz
R2 RDRAM 533 MHz # Slow speed example
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Roy Longbottom Augus 2015
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