- Mar 11, 2011
Charlie also said:"No hard data but friends have told me it clocks well. If 3.4 is launch speeds, 5 should be no problem for the pros. Haven't heard of any speed path issues yet but you never know until the LN2 guys get ahold of it.
My guess is 4.5 Ghz now looks very realistic on air for 24x7. I think AMD will aim for max single core turbo of 4.2 Ghz with final release chips to remain competitive against Skylake and Kabylake in gaming.
So last June we had A2 stepping and CanardPC was playing with (I believe) A0 at the end of November. So AMD seeded just the initial stepping to mobo partners for platform verification purposes. AMD should have taped out A3 or even A4 by now and that is probably the reason why Fottemberg @ BitsNChips (and other people) are talking about higher frequencies as of late.Charlie @ RWT said:> I assume that the missing features have to do with clock and power management, not microarchitecture, right?
Yeah. Turbo was one, some power management was another, and some minor stuff. It is in the CPU just that the stepping we used was either disabled or buggy. This is normal development stuff, not anything major and most of it seems to be firmware and optimizations, not basic functionality.
I am aware of the open bug counts on A1 and A2 and am very optimistic based on the changes. The next step (A3/4th rev of Zen) should have the last few stamped out long before release. It was stable enough to play Doom on last June so....
If AMD can launch a 8C/16T chip with ST Turbo >4Ghz, then it will be a bullseye hit.