i just went to a bfg gtx280 oc, and now for some reason, if there is a lot going on on all 5 wow 2 monitors, the pc will jst shut off. i restart and everything is fine, im starting to think it may be a power issue, using a 750w psu, i think i need to use the 2x6=1x8 adapter and the 2x4=1x6 adaptor instead of the 6 and 2x4=1x8. might be better off to do that, i dunno, worth a shot