Don't know if it's useful based on the comments that came after this one, but games in windowed mode will never push the card to it's max temperature, so you best run them in fullscreen and alt + tab before there's time for the temperature to change.
@DAB: sadly no. I guess I'll just buy a new one. What brand do you recommend??
[Edited by iNTANGiBLE, 7/2/2011 3:50:58 AM]
Branding isn't a major issue for PSU's, its what the 12v Rails give and what functionality they provide (2xPCI-e 6 Pins etc)