I just bought the xfx amd radeon hd 6770 and it has been idling at 78 degrees Celsius, i have all the latest drivers and all the fans in my computer are super clean but I can't get the temperature to go down. I have a brand new Antec EarthWatts EA-650 650W Power Supply, and an amd phenom X6 processor. Whenever I play a game, even something like portal, it overheats and I get bsod. Please help!