Originally Posted by brentpresley
The contact I mentioned a few posts above (DOD) has hinted to me that the 65nm ES chips they have do not OC well at all. Although he won't come out and just say it or put it in writing b/c of the NDAs.
NOW - I don't know how early on the chips he has are, or how much AMD has improved things since then. So keep that in mind.
But to expect that a dumb shrink (Rev G) of K8 is going to overtake Core 2 (20% faster IPC) is just wishful thinking.
Intel has had a YEAR to perfect their 65nm SHIPPING products. AMD is still perfecting 65nm FOR RELEASE. Simply put, Intel has had MUCH longer to work with the process technology and improve both the yields and the speed their chips can hit.
Additionally, it looks like we are seeing further improvements in Intel's 65nm process tech. Early release Core 2 chips had a lot of difficulty getting above 3.5GHz (unless you had a REALLY cherry-picked CPU). Now it seems that hitting 3.7-3.8GHz on decent air cooling is not that hard, if you have a motherboard that is up to the task of the high FSBs.
For Reg G(2, 3, whatever) to MATCH the performance of a 3.5GHz Core 2, AMD would have to get the clock speed up to 3.5GHz * 1.2 = 4.2GHz, assuming a 20% IPC lead for Core 2. I won't say it is impossible, but in a SHIPPING product it is going to take QUITE A WHILE.
No AMD's answer to the Core 2 performance crown is Rev. H. Period.