SiSoft Sandra 2009 SP2 - 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 SP2 - Processor - Windows Vista Processor Arithmetic Dhrystone ALU: (GIPS) Ranking Intel Core i7 920 68.25 Intel Core i5 750 54.13 Intel Core 2 Duo E8500 24.86 Intel Core 2 Duo E8400 23.56 AMD Phenom II X4 965 Black Edition 46.44 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 AMD Phenom II X2 550 Black Edition 21.26 AMD Athlon II X4 620 35.42 AMD Athlon II X2 250 20.52 Processor Arithmetic Whetstone iSSE3: (Gflops) Ranking Intel Core i7 920 60.22 Intel Core i5 750 34.31 Intel Core 2 Duo E8500 23.41 Intel Core 2 Duo E8400 22.17 AMD Phenom II X4 965 Black Edition 44.51 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 AMD Phenom II X2 550 Black Edition 20.47 AMD Athlon II X4 620 34.31 AMD Athlon II X2 250 19.81 Processor Multi-Media Int x8 iSSE3: (Mpixels/s) Ranking Intel Core i7 920 119.35 Intel Core i5 750 95.45 Intel Core 2 Duo E8500 57.08 Intel Core 2 Duo E8400 54.17 AMD Phenom II X4 965 Black Edition 133.5 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 AMD Phenom II X2 550 Black Edition 59.87 AMD Athlon II X4 620 102.07 AMD Athlon II X2 250 57.93 Processor Multi-Media Float x4 iSSE2: (Mpixels/s) Ranking Intel Core i7 920 95.4 Intel Core i5 750 59.45 Intel Core 2 Duo E8500 32.83 Intel Core 2 Duo E8400 31.22 AMD Phenom II X4 965 Black Edition 58.52 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 AMD Phenom II X2 550 Black Edition 26.67 AMD Athlon II X4 620 44.69 AMD Athlon II X2 250 25.8 Processor Multi-Media Float x2 iSSE2: (Mpixels/s) Ranking Intel Core i7 920 49.63 Intel Core i5 750 30.29 Intel Core 2 Duo E8500 16.63 Intel Core 2 Duo E8400 15.76 AMD Phenom II X4 965 Black Edition 31.9 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 AMD Phenom II X2 550 Black Edition 14.54 AMD Athlon II X4 620 24.69 AMD Athlon II X2 250 14.07

Moving from SiSoft Sandra's Dhrystone test to the Whetstone benchmark shows a remarkable drop-off in the Core i5 750's performance. For the most part though the Core i5 750 is on par with the performance of AMD's Phenom II X4 processors in this test.

SiSoft Sandra 2009.SP4 - Processor - Windows 7 Processor Arithmetic Dhrystone ALU: (GIPS) Ranking Intel Core i7 920 68.22 Intel Core i5 750 59.78 Intel Core 2 Duo E8400 25.8 AMD Phenom II X4 965 Black Edition 46.17 Processor Arithmetic Whetstone iSSE3: (Gflops) Ranking Intel Core i7 920 60.34 Intel Core i5 750 33.88 Intel Core 2 Duo E8400 20.84 AMD Phenom II X4 965 Black Edition 44.78 Processor Multi-Media Int x8 iSSE3: (Mpixels/s) Ranking Intel Core i7 920 119.33 Intel Core i5 750 95.56 Intel Core 2 Duo E8400 54.17 AMD Phenom II X4 965 Black Edition 134.7 Processor Multi-Media Float x4 iSSE2: (Mpixels/s) Ranking Intel Core i7 920 96.57 Intel Core i5 750 59.4 Intel Core 2 Duo E8400 31.27 AMD Phenom II X4 965 Black Edition 58.43 Processor Multi-Media Float x2 iSSE2: (Mpixels/s) Ranking Intel Core i7 920 49.67 Intel Core i5 750 30.29 Intel Core 2 Duo E8400 15.8 AMD Phenom II X4 965 Black Edition 32

Raw CPU performance doesn't change significantly in Windows 7, which is as expected. The operating system is largely staying out of the processor's way.