Intel Core i5 vs. AMD Phenom II X4 CPU Review

"In most scenarios Core i5 and Phenom II X4 achieved the same performance level and in most cases when one particular CPU was faster than the other the performance difference was practically negligible.

There were three important exceptions, however. When converting a full-length movie from a DVD (MPEG2) to DivX format Core i5-750 was 16% faster than Phenom II X4 965 and 20% faster than Phenom II X4 955; rendering a sample project on After Effects CS4 Core i5-750 was 22% faster than Phenom II X4 965 and 26% faster than Phenom II 955; and compressing files with WinRAR Core i5-750 was 19% faster than Phenom II X4 965 and 22% faster than Phenom II X4 955."