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8800GTX Lemon?

post #1 of 5
Thread Starter 
I have an evga 8800GTX that is stock at 576/900. I can overclock the memory to 1060, but I cant get the core past 605 without artifacts.

My cooling is a accelero xtreme 8800, and my temps -never- get above 57c.

I have tried just overclocking the core, while leaving the memory, at best I can get 610/925.

What gives? If I were doing this with a cpu I would say I would need to increase the voltage, but I have no clue if this applies to gpu's or not.

Does anyone have any suggestions on how to oc this thing better with the nice cooling I have? Or something to try that might help?

Thanks!
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post #2 of 5
do a volt mod.
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Lurking Ninja
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post #3 of 5
Quote:
Originally Posted by nicros View Post
I have an evga 8800GTX that is stock at 576/900. I can overclock the memory to 1060, but I cant get the core past 605 without artifacts.

My cooling is a accelero xtreme 8800, and my temps -never- get above 57c.

I have tried just overclocking the core, while leaving the memory, at best I can get 610/925.

What gives? If I were doing this with a cpu I would say I would need to increase the voltage, but I have no clue if this applies to gpu's or not.

Does anyone have any suggestions on how to oc this thing better with the nice cooling I have? Or something to try that might help?

Thanks!
My GTX did 648, anything more and it would artifact.
Luck of the draw, try different drivers, or vmod as you said.
You should also unlink the core/shader clocks.

In case you haven't noticed, the core clock is different than what you set.

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Mighty-iTX
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post #4 of 5
Yup luck of the draw. My 8800GTX did 621mhz core/975mhz memory/1450mhz shaders. If I overclocked it any higher in any area I got artifacts.
post #5 of 5
The overclocking potential varies. My 8800GTX will do ~630 (612MHz real) GPU / ~1525MHz Shaders / 1010MHz memory at the most (stable). Anything more and and I get artifacts in ATItool's 3D Cube stress test.
    
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