Well, right now the only suspect I have is my PSU, but its 800w and has 20a on each of its 4 12v rails. I've run each card by itself stock and OCd for some time, its only when in crossfire. I've tried a few different drivers too and they haven't fixed it. What makes it even more unusual is that I left the streetfighter 4 benchmark running for a hour with no problems, then I do that stupid Windows performance test thing out of curiosity and got a VPU recover message.