Best GPU Stress Test Utlity?

[imported_Meridian]

I currently use Prime95 to stress test my CPU, and was wondering what the best utility is for stress testing a GPU. I have an 8800GTX overclocked @ 648Mhz/959Mhz, and the idle temp is around 55 degrees, but I'm not sure what the temp is under load. I ran the test that came with nTune, but it didn't really affect the temp too much (only about 5 degrees). I also noticed that if I swap out of Call of Duty 4, the temp is around 70 degrees. But I was hoping for a better way to test the stability of my overclock settings, and maybe see if I can get them higher. Thanks,

Ben

P.S. If anyone knows a realistic maximum temp for the 8800GTX under load, I would appreciate it.

 

[nullpointerus]

ATI Tool 0.27 Beta 3

Enable the 3D view in ATITool and use the built-in artifact scanner.

There's also an auto-overclock mode for GPU and memory.

 

[imported_Meridian]

OK, thanks. I've been running the find max core for over 30 minutes now, and no errors have been found. How long should this test last?

 

[nitromullet]

P.S. If anyone knows a realistic maximum temp for the 8800GTX under load, I would appreciate it.

I've seen mine get up to 82C with no issues. The best way I've been able to watch real time temps is to run something very intensive (like the Crysis GPU benchmark) in windowed mode at a slightly lower rez than my native while running a temperature monitoring app. I actually use Gainward's Expertool to over clock and monitor. It's super easy and it keeps my settings between re-boots.