[Squeetard]

You are running the torture tests? Try the ones that test lots of ram and the ones that stress the cpu without using ram, see if that can tell you whether the culprit is ram or cpu.

I'd also try tweaking the bios settings and see what gives.

First, up the cpu voltage a bit and see if that helps, or underclock it. Then go conservative on the memory timings, maybe up the ram voltage a touch too.

Hopefully you can isolate the problem, or even make your system stable.