SiSoft Sandra 2009 - Processor	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 results are best.

SiSoft Sandra 2009 v15.72 - Processor Processor Arithmetic Dhrystone ALU: (GIPS) Points Ranking Intel Core i7 920 68.25 Intel Core 2 Duo E8400 23.56 AMD Phenom II X4 955 Black Edition 43.7 AMD Phenom II X3 720 Black Edition (DDR2) 28.64 AMD Phenom II X3 720 Black Edition (DDR3) 28.7 Processor Arithmetic Whetstone iSSE3: (Gflops) Points Ranking Intel Core i7 920 60.22 Intel Core 2 Duo E8400 22.17 AMD Phenom II X4 955 Black Edition 42.17 AMD Phenom II X3 720 Black Edition (DDR2) 27.64 AMD Phenom II X3 720 Black Edition (DDR3) 27.9 Processor Multi-Media Int x8 iSSE3: (Mpixels/s) Points Ranking Intel Core i7 920 119.35 Intel Core 2 Duo E8400 54.17 AMD Phenom II X4 955 Black Edition 125.63 AMD Phenom II X3 720 Black Edition (DDR2) 81.85 AMD Phenom II X3 720 Black Edition (DDR3) 81.92 Processor Multi-Media Float x4 iSSE2: (Mpixels/s) Points Ranking Intel Core i7 920 95.4 Intel Core 2 Duo E8400 31.22 AMD Phenom II X4 955 Black Edition 55 AMD Phenom II X3 720 Black Edition (DDR2) 36.04 AMD Phenom II X3 720 Black Edition (DDR3) 36.08 Processor Multi-Media Float x2 iSSE2: (Mpixels/s) Points Ranking Intel Core i7 920 49.63 Intel Core 2 Duo E8400 15.76 AMD Phenom II X4 955 Black Edition 29.99 AMD Phenom II X3 720 Black Edition (DDR2) 19.68 AMD Phenom II X3 720 Black Edition (DDR3) 19.68

SiSoft Sandra's affinity for multiple cores and hyper threading make it difficult for anything to touch the Core i7 920, with the Intel Core 2 Duo E8400 trailing significantly.

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 30.51 Intel Core 2 Duo E8400 9.11 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 Multicore Efficiency Latency: (ns) Points Ranking Intel Core i7 920 17 Intel Core 2 Duo E8400 44 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 Memory Bandwidth Int iSSE2: (GB/s) Points Ranking Intel Core i7 920 18.86 Intel Core 2 Duo E8400 7.26 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 Memory Bandwidth Float iSSE2: (GB/s) Points Ranking Intel Core i7 920 18.86 Intel Core 2 Duo E8400 7.27 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 Memory Latency (Random): (ns) Points Ranking Intel Core i7 920 81 Intel Core 2 Duo E8400 77 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 Memory Latency (Linear): (ns) Points Ranking Intel Core i7 920 9 Intel Core 2 Duo E8400 11 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

The Core 2 Duo E8400 is again out of its league here. While the Core i7 920 and the Phenom II processors are able to avoid memory bottlenecks by placing the memory controller on the CPU die, the Core 2 Duo E8400 has to rely on the Intel X48 Express chipset for decent speeds.