Guys i have question to you ... i have brand new asus gtx470, product code: ENGTX470/2DI/1280MD5/V2 <- and that is a problem ( second card is ENGTX470/2DI/1280MD5 and she is goin 880+ on gpu without any blackscreens ) ... when i want push higher clocks 750+ a have blackscreen. Anybody knows what can be wrong with this card ?