today I heard my PC revving like a car engine, upon looking closer I found that it was my video card. I checked the catalyst control center software and it said that my video card was running at 100 degrees celcius when I had world of warcraft running. It seems to run somewhere between 50 - 60 idle. I had absolutely no problems yesterday,
I did overclock the card, however when I noticed the obscene temperature I quickly reset the settings to default. I don't think there's any interference with the fans in the case, prior to today the card ran at probably 70 degrees in game.
What happens when you select default and no man. fan (auto)? Did you update the drivers to the beta? If so roll back to the 12.4 version. Does it overheat and rev the fan when set to default and auto fan control?