Re: Higher idle temps on 6800GT
I'd suggest taking a close eye on the "delta" temp change, when a high load is taken off.. For example, run the RTHMBL (whatever its spelled) demo for like 10-15 mins to get your card nice and toasty, with a temperature monitor visible. When you stop the demo, your temps should drop like 8-10 C's(from say 85 C) in a few seconds. If it doesn't, I would bet you have a very heavy dust build up somewhere.
If you have the first generation of 6800GT's, the one with the single big fan on the side, you most definitely want to take off the top plate, and be surprised to see the "wall" of dust.
The 2nd generation of 6800GT's with two fans seem to have more space between the fans and fins, and probably are more forgiving.. I should probably check..
My 1st gen 6800GT was rma'd after 2 years of use. It never reached 120 degs, but I suspect the high temps brought it to an early death. It was replaced with a 2nd gen.