Quote Originally Posted by lowdog View Post
What PSU are you using????......and did you try another PSU?????.

Either your PSU is inadequate, your ram is dodgy, your not setting all your voltages correctly oor your mobo is a dud.

I'd first look at the PSU, then your ram and voltage settings..
Yes, in a previous post I detailed that I bought a new Corsair 1000W PSU (over my current CM Real Power Pro 850W) and it did not fix anything - my PSU is fine.

I've tried 3 sets of RAM, they were all Gskill, although different models. I've experimented with a very wide range of voltages - and keep in mind when I have the GTX 280 in, it's stable at 4 ghz very easily.