I was overclocking my Phenom II 965BE, and when raising the multiplier past 19x, my motherboard reset it either to 5x, or "AUTO". 19.5x reset to 5x, and ~35x reset to 19x. It was very odd. At first, I thought this was a voltage problem, so I rasied the CPU voltage to 1.5v (I had tried small increments up to that voltage) and I gave up, as it kept resetting to 5x. I can't seem to figure out whats wrong with it, as AMD Overdrive got me a multiplier of up to 21x @ 1.55v)
Would this be a problem with the motherboard, or the CPU?
The motherboard i'm using is the GIGABYTE M68MT-S2P