Yep, donkey this is it. The page fstguide.com/pcchecklist.htm shows intel and amd processors by category.
These two are probably the best for all CPUs.
The BalusC Server | Hardware | CPU Types
cpu-collection.de
Not all websites agree on particular figures though, including the above two. I started to do my own list for Intel and some older AMD and Cyrix chips but it takes so much time I stopped at the Prescotts.