There is another posibility ............. it maybe a power problem.
What is your power supply rated at?
ATI cards generally suck more power out of a system than they say on the spec sheet.
875 watt. The ATI 5970 HD minimum requirement is 650 watt for a single card, 850 watt with dual cards via Crossfire. I think the 875 watt is enough for my single card.
Possibly not ........ as a lot is dependant on the supply from the PSU to the card. I've burned out a PSU and a card in the last few years. The PSU was at least 50 watts above the minimum for the card but the power was distributed to the card badly. The card that burned out was because of a similar problem it just gave a different out come. My PSU now is well over spec for the power requirements of my card and should be good enough for at least one upgrade.









