Hello If this has been debated much before and so on I am sorry but I did a search and didnt find an answer. I have a Radeon 3780x2 with a total of 1 GB GDDR3 rams running in my computer, and for some reason, the fan dosent seem to change speeds when the card performs. In some games like Mirrors Edge, Need for Speed Undercover and Frontline Fuel of War I have no problems. But in Assasisn Creed for instance, my card seems to run very hot and eventually the game or the computer shuts down. I have noticed that the speed of the fan dosent seem to change, and if I alter a profile within catalyst to just fix the fan speed at say 75% then no game will start up at all. Is there any way to fix it so that the fan speed changes along with the temeprature of the card to keep it cool?