you can see one of the latest
CPU tests here
http://techreport.com/articles.x/17402/3
Intel beats it - and on the workrelates tests, intel is really ahead. When it comes to image processing, its at least 30% ahead.
This is a score based on a full system, not just the CPU alone, So this is what you actually GET and not just some theory bullshit
Check the list of some sugested builds with both chips here in their
2009 Intel and AMD system guide