Hi guys Long time reader first time poster A friend of mine has kindly given me his HD5970 as he claims one GPU is not working, or is working incorrectly. He never overclocked or overvolted it so I guess it must just be due to age. Anyway, I was wondering whether there was a way to physically disable the malfunctioning GPU by flashing the BIOS of the card or something? Or any other method? Which smoothly brings me on to my next point, I have a 600W Stealth X Stream PSU from OCZ, and I know the minimum for this card is 650W, however if I can disable one GPU I should also reduce the power requirements and therefore make the system more stable when I do eventually install it. Any help would be greatly appreciated.