SiSoft Sandra 2009 - Memory	Source: Sandra

Sandra is designed to test the theoretical power of a complete system and individual components. The numbers taken though are again, purely theoretical and may not represent real world performance. Higher bandwidth and lower latencies are best.

SiSoft Sandra 2009 v15.72 - Memory Multicore Efficiency Bandwidth: (GB/s) Points Ranking Intel Core i7 920 32 Intel Core i5 750 13 Intel Core 2 Duo E8400 9 AMD Phenom II X6 1090T 4.42 AMD Phenom II X6 1075T 4.44 AMD Phenom II X4 970 Black Edition 4.72 AMD Phenom II X4 965 Black Edition 4.75 AMD Phenom II X4 910e 4.57 AMD Phenom II X2 555 Black Edition 3.9 AMD Athlon II X4 645 3.27 AMD Athlon II X4 635 3.24 AMD Athlon II X4 620 3.22 AMD Athlon II X3 435 3 AMD Athlon II X2 240e 3.1 Multicore Efficiency Latency: (ns) Points Ranking Intel Core i7 920 19 Intel Core i5 750 59 Intel Core 2 Duo E8400 47 AMD Phenom II X6 1090T 94 AMD Phenom II X6 1075T 102 AMD Phenom II X4 970 Black Edition 78 AMD Phenom II X4 965 Black Edition 88 AMD Phenom II X4 910e 103 AMD Phenom II X2 555 Black Edition 89 AMD Athlon II X4 645 97 AMD Athlon II X4 635 99 AMD Athlon II X4 620 102 AMD Athlon II X3 435 83 AMD Athlon II X2 240e 97 Memory Bandwidth Int iSSE2: (GB/s) Points Ranking Intel Core i7 920 18.87 Intel Core i5 750 16.6 Intel Core 2 Duo E8400 7 AMD Phenom II X6 1090T 12.83 AMD Phenom II X6 1075T 12.55 AMD Phenom II X4 970 Black Edition 12 AMD Phenom II X4 965 Black Edition 12.22 AMD Phenom II X4 910e 12.16 AMD Phenom II X2 555 Black Edition 10.34 AMD Athlon II X4 645 12 AMD Athlon II X4 635 11.66 AMD Athlon II X4 620 11.22 AMD Athlon II X3 435 11.16 AMD Athlon II X2 240e 10.27 Memory Bandwidth Float iSSE2: (GB/s) Points Ranking Intel Core i7 920 18.86 Intel Core i5 750 16.58 Intel Core 2 Duo E8400 7.1 AMD Phenom II X6 1090T 12.84 AMD Phenom II X6 1075T 12.5 AMD Phenom II X4 970 Black Edition 12 AMD Phenom II X4 965 Black Edition 12.23 AMD Phenom II X4 910e 12.15 AMD Phenom II X2 555 Black Edition 10.32 AMD Athlon II X4 645 12 AMD Athlon II X4 635 11.6 AMD Athlon II X4 620 11.23 AMD Athlon II X3 435 11.18 AMD Athlon II X2 240e 10.25 Memory Latency (Random): (ns) Points Ranking Intel Core i7 920 80 Intel Core i5 750 78 Intel Core 2 Duo E8400 88 AMD Phenom II X6 1090T 83 AMD Phenom II X6 1075T 91 AMD Phenom II X4 970 Black Edition 85 AMD Phenom II X4 965 Black Edition 82 AMD Phenom II X4 910e 87 AMD Phenom II X2 555 Black Edition 90 AMD Athlon II X4 645 95 AMD Athlon II X4 635 92 AMD Athlon II X4 620 93 AMD Athlon II X3 435 92 AMD Athlon II X2 240e 86 Memory Latency (Linear): (ns) Points Ranking Intel Core i7 920 9 Intel Core i5 750 8 Intel Core 2 Duo E8400 12 AMD Phenom II X6 1090T 14 AMD Phenom II X6 1075T 16 AMD Phenom II X4 970 Black Edition 15 AMD Phenom II X4 965 Black Edition 15 AMD Phenom II X4 910e 15 AMD Phenom II X2 555 Black Edition 15 AMD Athlon II X4 645 16 AMD Athlon II X4 635 15 AMD Athlon II X4 620 13 AMD Athlon II X3 435 15 AMD Athlon II X2 240e 13

Once again the Core i7 920 PC demonstrates its incredible theoretical performance in Sandra. The triple-channel memory interface allows it to post huge gains in the memory bandwidth test. The Athlon II X4 645 holds its place, incrementally faster than the Athlon II X4 635 and 620 chips. Memory performance has always been Intel's game, the Athlon II X4 645 won't alter that.

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