idle at 35c in my watercooled full tower with 6 600rpm 120mm fan besides the fan on the radiator . I can not hear it over the radiator fan . never see the GPU get over 78c . DVI and HDMI work fine , have not try the DisplayPort . run Battlefield 3 just fine , absolutely murder my girlfriend 's WoW , and every other game I have try work fine . so do CUDA . Worth every penny .