After Pentium 4, I kinda lost track. Therefore here a list of benchmark-links for CPU’s.
cpubenchmark Thousands of benchmark results that PerformanceTest users have posted to this web site have produced five Intel vs AMD CPU charts to help compare the relative speeds of the different processors.
You can also compare current INTEL processors on the Intel website. Go there.
Another one is All Desktop CPU Charts Q3/2008. Here you can compare actual performance of programs with different processors.