Oh yes! That card puts out a butload of heat. If you dont have liquid cool...or a ton f fans ejecting the heat your CPU will cook. I have just had this problem since I just upgraded my 5950 to 6800 Ultra. I had to put two 120mm fans on either end and a 80mm on top and the side. I would suggest liquid cool if you have a pro put it on for you, but i would not suggest you do it yourself...Also do you get the blue screen of death?!