I think AMD knows they won't be able compete head on with the 965, from a performance perspective. A chip like that would probably not be worth it for AMD in other words.
I don't think 4 GHz. is too far to reach for AMD's Deneb, their Agena chips already do 3,5 GHz. quite often and their Deneb chips will launch at 400 MHz. faster than Agena. So it's not something that can only be done with a very small amount of chips, but it sure is not 100% guaranteed of course.





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