My ATI9800 went south from heat.
Replaced with an RMA took about 2 weeks.
Now I got "Arctic Cooling" video card cooler hooked up to it. Takes up an additional slot though. Remove old heatsink and fan, install new heat sink and fan and mount exhaust port with hi/low speed switch in the slot next to vid card. Used Arctic Silver #5 on it.
Blows allot of heat right out the back of the computer case.
CPU now runs cooler then before.
Dang thing runs pretty hot
Asus monitor says
CPU temp at 45C
MB temp is at 33C
CPU fan 2789 average
12V is at 12.352
5V is at 4.838
3.3 is at 3.12
VCore is at 1.664