Other than a defective video card, these are just suggestions that might help.
1. Check for dust clogging up the heatsink
2. Verifiy with multiple apps that those are your temps. GPUz, EVGA Precision, Riva Tuner.
3. Move your video card to another computer system, if possible, and check temps. This ensures that it is not a poor airflow or high case ambient temps that is causing it.
5. Move your video card to a different PCIe slot, if you have this option.
6. If you're using 780i reference motherboard, the NB chipset cooler blows air to the video on the first PCIe slot, add a sheet of paper or cardboard to block this air and recheck your temps.
1. cant get a screw driver small enough to open the plastic cover
2. used GPUz and Nvidia monitor
3. Did at my friend's place. He's got the ASUS version
5.(dunno why u skipped 4) I have none
6. Same answer as no 5.
hi.. i have an xfx 9800 gt with the same problem. even on a cool night like tonight, gpuz shows temps by the driver at 65C and the sensor chip at 58C. my cpu is about 38 C.
check to see if your gpu cooler has a small square plate on the back with four tiny screws holding it in place. one of the screws on mine is not flush like the others so its my prime suspect right now. also my cooler did not have any thermal pads for the ram for some reason.
xfx just sent a replacement cooler but its for a slightly diff model 9800gt .. so ill have to wait some more to find out why.