AMD X4 Phenom x64 OS Overclock Stablilty Testing/Troubleshooting

[Lightman]

I was the first who started this debate couple of months ago.

It is true what Nedjo said - EVERY CPU is affected (Intel and AMD). The problem with Phenom (especially B2) is that clock disparity between x32 and x64 is very big for most samples.
From my experience if your CPU is unstable at a certain frequency under x64 OS try to LOWER vCPU. It worked for me, but you can't gain to much out of this solution. Much better cooling might help as well.
A lot depends on BIOS support. Gigabyte DQ-6 is a good example. None of my Phenoms could go stable beyond certain frequency and my 9850 for instance would be unstable at around 2700MHz (5 min. stable @2760MHz) on BIOSes up to F4. With new F5c BIOS I can get it absolutely stable @2760MHz default vCore!

@xPliziT Very good point! I was thinking the same! Only future revisions can change this situation.

Good luck guys in yours x64 adventures!!