Pondering buying a GTX 260, I currently have an OC'd 8800GT and the fan noise drives me nuts. It sounds like a hair dryer when I am gaming. I've read all the reviews with decibel levels etc...but I would like to know from actual owners who have OC'd their GTX 260 how loud is it? Does OC'ing the GTX 260 require setting up various fan profiles with Riva? Is the fan efficient, does it dump heat outside of the case? Another gripe about my 88800GT that it dumps everything inside...