Well I've tried both FEAR 2 and Crysis. After taking both cards out and blowing the dust out of them, and reinstalling them, I haven't had any more issues yet. It may have been a heat related issue after all.
Well I know for a fact that the top card is fine because with crossfire disabled I have no issues. I'm going to try swapping the bottom card in for the top one, and take the other one out to see if that card has any issues in a bit.
I have two 4870x2 cards and am running them in crossfire. With crossfire enabled whenever I run a game, about ten minutes in the game will freeze, and the screen will get all messed up with weird colors and lines going through it. Then I have to hard restart the computer. What could possibly be...
EDIT: SOLD
$260 shipped, If you're in the US. This motherboard is brand new and has never been used. Note: the shrink wrap was removed, and the box was opened because someone promised me they were going to buy it but wanted some pictures first, but then they decided to back out for some...