Synthetic benchmarks - SiSoftSandra

Sisoft Sandra XIIc CPU-Arithmetik Drystone Benchmarks, results in MIPS (million instructions per second)
Intel Core I7-965 Extreme Edition,3.2 GHz	79'280
Inel Core I7-920, 2.66 GHz	66'460
Intel Core2 Quad Extreme Q9650, 3.0 GHz	55'781
Intel Core2 Dual E8600, 3.3 GHz	30'983
Intel Core2 Dual E7200, 2.53 GHz	23'544
more is better

Sisoft Sandra XIIc CPU-Arithmetik Whetstone Benchmarks, results in MFLOPS (million floating point operations per second)
Intel Core I7-965 Extr. Edition, 3.2 GHz	68'850
Intel Core I7-920, 2.66 GHz	58'170
Intel Core2 Quad Extreme Q9650, 3.0 GHz	39'859
Intel Core2 Dual E8600, 3.3 GHz	22'544
Intel Core2 Dual E7200, 2.53 GHz	17'183
more is better

In SiSoftSandra Core i7 is up to 72 percent faster than its predecessor.

Sisoft Sandra XIIc Memory Bandwidth Integer, results in MB/s
Intel Core I7-965 Extr. Edition, 3.2 GHz	18'150
Intel Core I7-920, 2.66 GHz	17'010
Intel Core2 Quad Extreme Q9650, 3.0 GHz	7'412
Intel Core2 Dual E8600, 3.3 GHz	7'332
Intel Core2 Dual E7200, 2.53 GHz	5'990
more is better

Sisoft Sandra XIIc Memory Bandwidth Fliesskomma, results in MB/s
Intel Core I7-965 Extr. Edition, 3.2 GHz	18'260
Intel Core I7-920, 2.66 GHz	17'090
Intel Core2 Quad Extreme Q9650, 3.0 GHz	7'354
Intel Core2 Dual E8600, 3.3 GHz	7'305
Intel Core2 Dual E7200, 2.53 GHz	6'023
more is better

Even more drastic is the performance increase in memory bandwidth: A massive 248 percent.

Sisoft Sandra XIIc CPU-Multimedia Fliesskomma Benchmarks, results in MPixel/s
Intel Core I7-965 Extr. Edition,3 .2 GHz	130.02
Intel Core I7-920, 2.66 GHz	109.22
Intel Core2 Quad Extreme Q9650, 3.0 GHz	95.20
Intel Core2 Dual E8600, 3.3 GHz	59.98
Intel Core2 Dual E7200, 2.53 GHz	6.57
more is better

Sisoft Sandra XIIc CPU-Multimedia Integer Benchmarks, results in MPixel/s
Intel Core I7-965 Extr. Edition, 3.2 GHz	168.11
Intel Core I7-920, 2.66 GHz	141.08
Intel Core2 Quad Extreme Q9650, 3.0 GHz	135.17
Intel Core2 Dual E8600, 3.3 GHz	75.25
Intel Core2 Dual E7200, 2.53 GHz	6.61
more is better

Also in the multimedia benchmarks Nehalem is up to 37 percent faster.