Quote Originally Posted by FatboyHK View Post
OK, while you guys are busy with watercooling stuffs, I kind of solved my problem

It turned out to be my RAM. I dropped back down to 1600 and guess what, 100% stable, even with SLI.

I wonder what setting I missed, my RAM is a OCZ 2000MHz module, I think it should make 1800MHz without much trouble... Seem I need to do more homework.

May be disable P1 / P2, or drop to 2T? any hints?
What happens when you run Memtest? Do you have 2GB or 4GB of ram? What voltage are you using on the memory? Which memory slots are you using?
I have 9 x 450FSB running 100% stable on this board so it can be done with some patience, and trial and error.