my 4850GS idle temp......36c..  

yea...thanks bro.....
btw how to check the full load temp...???

Hey bro,

I dun think it's due to heat, like the guys said: 76C to 90C till fine. Personally, I know overclockers who played till over 100C and still card didn't burn. But of course we don't recommend it lar for long term maintenance.

Normally if too hot, PC will hang, flicker, artifacts or lose display (blackout). But it will not power off. Suggest you use either 3DMark06 or Furmark and stress your GC then see is your rig power off. If not, then most probably it's due to your PSU not insufficient power.

Unless you are using Gainward Expertool under safe mode settings and your rig is hot internally. Then Expertool will auto-shutdown your PC when it gets too hot.

For nice coolers, take a look at Moderno PC superb choices: http://forum.lowyat.net/topic/750189

Maybe sell off your reference and go for Gainward 4850 Golden Sample lor...  See this: http://www.tweaktown.com/reviews/1607/16/g...card/index.html