XFX 6800GT. Not OC. Hits around 72 idle according to Everest. Climbs to over 100 when used in 3D game. Fan seems to be working OK.
This looks to hot to me, and I get BSODs in games (not in Prime etc) which suggests that it is overheating.
Why would it overheat? Can't see an easy way to dismantle heatsink fan either (tiny screws).