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 - Windows Vista Multicore Efficiency Bandwidth: (GB/s) Ranking Intel Core i7 920 30.51 Intel Core i5 750 13.21 Intel Core 2 Duo E8500 9.57 Intel Core 2 Duo E8400 9.11 AMD Phenom II X4 965 Black Edition 4.7 AMD Phenom II X4 955 Black Edition 4.75 AMD Phenom II X3 720 Black Edition (DDR2) 3.67 AMD Phenom II X3 720 Black Edition (DDR3) 3.72 AMD Phenom II X2 550 Black Edition 3.86 AMD Athlon II X4 620 3.23 AMD Athlon II X2 250 3.06 Multicore Efficiency Latency: (ns) Ranking Intel Core i7 920 17 Intel Core i5 750 60 Intel Core 2 Duo E8500 42 Intel Core 2 Duo E8400 44 AMD Phenom II X4 965 Black Edition 95 AMD Phenom II X4 955 Black Edition 89 AMD Phenom II X3 720 Black Edition (DDR2) 83 AMD Phenom II X3 720 Black Edition (DDR3) 80 AMD Phenom II X2 550 Black Edition 103 AMD Athlon II X4 620 103 AMD Athlon II X2 250 91 Memory Bandwidth Int iSSE2: (GB/s) Ranking Intel Core i7 920 18.86 Intel Core i5 750 16.3 Intel Core 2 Duo E8500 6.77 Intel Core 2 Duo E8400 7.26 AMD Phenom II X4 965 Black Edition 12.24 AMD Phenom II X4 955 Black Edition 12.18 AMD Phenom II X3 720 Black Edition (DDR2) 11.38 AMD Phenom II X3 720 Black Edition (DDR3) 11.45 AMD Phenom II X2 550 Black Edition 10.3 AMD Athlon II X4 620 11.23 AMD Athlon II X2 250 10.25 Memory Bandwidth Float iSSE2: (GB/s) Ranking Intel Core i7 920 18.86 Intel Core i5 750 16.25 Intel Core 2 Duo E8500 6.65 Intel Core 2 Duo E8400 7.27 AMD Phenom II X4 965 Black Edition 12.2 AMD Phenom II X4 955 Black Edition 12.17 AMD Phenom II X3 720 Black Edition (DDR2) 11.41 AMD Phenom II X3 720 Black Edition (DDR3) 11.42 AMD Phenom II X2 550 Black Edition 10.26 AMD Athlon II X4 620 11.23 AMD Athlon II X2 250 10.25 Memory Latency (Random): (ns) Ranking Intel Core i7 920 81 Intel Core i5 750 79 Intel Core 2 Duo E8500 86 Intel Core 2 Duo E8400 77 AMD Phenom II X4 965 Black Edition 83 AMD Phenom II X4 955 Black Edition 83 AMD Phenom II X3 720 Black Edition (DDR2) 82 AMD Phenom II X3 720 Black Edition (DDR3) 84 AMD Phenom II X2 550 Black Edition 87 AMD Athlon II X4 620 93 AMD Athlon II X2 250 85 Memory Latency (Linear): (ns) Ranking Intel Core i7 920 9 Intel Core i5 750 8 Intel Core 2 Duo E8500 12 Intel Core 2 Duo E8400 11 AMD Phenom II X4 965 Black Edition 15 AMD Phenom II X4 955 Black Edition 15 AMD Phenom II X3 720 Black Edition (DDR2) 14 AMD Phenom II X3 720 Black Edition (DDR3) 15 AMD Phenom II X2 550 Black Edition 16 AMD Athlon II X4 620 13 AMD Athlon II X2 250 15

The Core i5 does very well here. While it doesn't have the advantages of QPI and triple-channel memory the way the Core i7 does, it can still run circles around the AMD Phenom II's memory performance.