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Have been trying to finally find high end stability at 22C ambient...
2.8G (200x14) boots easily at 1.35V but it's unstable.
1.40V = unstable
1.450V = unstable
1.50V = unstable
1.56V = unstable
Never tried more, this is air, and for air even that was too high. MHz limit @ cooling (stock cooler).
As a test I tried 1.47V at 2.3G (idles 35C, max fanspeed) and it was also unstable. So we see, Phenom hates high voltage on air at these ambients, at least mine does. 1.456V was max which would run without giving errors.
Tried (207x13.5) 2.794G next;
1.40V = unstable
1.450V = unstable
1.488V = unstable
Tried (206x13.5) 2.78G next;
1.40V = unstable
1.450V = unstable
1.488V = unstable
Stopped right there. Previously I've had upto 2.756G fully stable. So now I'm trying the same MHz again to see if it is still stable.
Right now testing 1.39V idle/1.368V load and it's 2.756G stable.
I'll drop volts next to find lowest it's stable at... but you can already see that at 1.27V easily stable for 2.63G, for just 135MHz more (+5.13%) you require more than +0.2V (1.488V -- +17.17%) and you still cannot get perfect stability (fails after ~2-3 hours P95 small FFT). That's what you call a processor limit. 
On H2O, I do think you can get 2.8G stable with lower volts with this chip and possibly bench +2.9G.
EDIT!:
-2.756G passed 1.392V 5hr and then, whilst gaming, it froze the system = unstable 
-2.7G used to be fully stable for anything around 1.320V around 10 days back for over a week that I tested: Original Stability Report
Now, unfortunately it failed P95 at 2hr20min and repeatedly failed playing a simple Youtube video at 1.360V. 
This may however have something to do with the temps. Phenom may not like these temps much, before I was using the same cooler but with a good mount and solid paste. Now I was idling over 10C higher since the paste was 1/3 of original left and reused. Will throw my Zalman onto it to check how it does... 50-54C are not temps which will make Phenom core error, so if it is finding instability at >50C it'll be because the core temp probe is reading minimum -10-15C from the real value. This'll have to be tested...
Coming up next...
At what <monitoring tool> temperatures does a stable Phenom at stock start to error?
Last edited by KTE; 02-05-2008 at 06:58 AM.
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