Originally Posted by Xion X2
On my prior build w/ the X2 4400+, I had a Prime95 stable overclock at 2.65gHz by increasing the voltage to 1.5v. I cooled the chip w/ an Arctic Freezer 64.
Even if your overclock is prime stable, it could still be unstable in other apps, especially if you test with only one FFT type.
I prefer 3d apps because they load the whole system, CPU, GPU, Mem, various buses, etc...