Re: Geforce 6800 GT Overheat?
84' C is way high. My 6800 GT idled in the low 40's and when the dust blocked the heatsink under the cover, it would get into the mid 50's. Mine never hit 84' under load even. Only thing I can think of is, you must not have very good case air flow/ventilation. Plus, mine had the eVGA copper heatsink, but that wouldn't make a 30' difference.
AMD FX-8320 Vishera 8-Core 3.5GHz (4.0GHz Turbo)
G.SKILL Ripjaws X Series 16GB (4x4GB)
EVGA SuperClocked GeForce GTX 760 2GB w/ EVGA ACX Cooler
MSI GTX 460 (Dedicated PhysX)