6800GT Overclocking oddity

Sideswipe001

Golden Member
May 23, 2003
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I got my PNY 6800GT a few days ago and so far it's wonderful. But I've had one odd issue in my overclocking adventures with it.

I enabled coolbits in the registry, and so have been using the sliders that enables to overclock with. Anyone who's used this knows how there's a "test settings" button you have to press before you can accept a speed change.

When I first got the card, I managed to overclock it all the way up to 418/1.2 Ghz. It ran fine like that for about a day of playing City of Heros. Then I installed NWN and KOTOR. I started playing KOTOR yesterday and had a few lockups, so I figured i'd turn down the video overclock a bit. I tried slightly lowering settings - 414 or so at first, but the "test settings" kept failing. In fact, it wouldn't let me go any higher than 399/1.1 GHz now.

I know that's still Ultra speed, and I'm not complaining. It's a fine overclock. I just wondered if anyone knew why I lost 20 mhz overnight on the core, and 100 on the memory. Could something have set this off?

Secondly, is there a way to manually set the core/memory without doing that "test settings"? A registry setting somewhere or something?
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
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Aug 22, 2001
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Sounds like overclocking is damaging your card already, I'd go back to defaults and play it safe for awhile to see if it's solid or flakes out all together.
 

Keysplayr

Elite Member
Jan 16, 2003
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Why do people insist on damaging their 400+ dollars worth of brand new hardware?
People, the cards are freakin fast enough as they come out of the wrapper. You most likely damaged your core/memory. I guess its RMA time huh. Where did you buy it from?
 

Sideswipe001

Golden Member
May 23, 2003
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It's not damaged. It runs fine at 50 Mhz faster than stock still. I'm just complaning because it's not running 70 over stock anymore.

I'm not going to RMA a card because it didn't overclock as much as I wanted.
 

DAPUNISHER

Super Moderator CPU Forum Mod and Elite Member
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Aug 22, 2001
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Originally posted by: Sideswipe001
It's not damaged. It runs fine at 50 Mhz faster than stock still. I'm just complaning because it's not running 70 over stock anymore.

I'm not going to RMA a card because it didn't overclock as much as I wanted.
Good man :beer: but given the symptoms I'd still go back to stock and monitor it closely for a week or 2 to be certain everything is alright.
 

filmore crashcart

Senior member
Dec 18, 1999
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I had the same experience..... you can't trust coolbits and your still taking a risk at overclocking. Everyone assumes that all these cards will hit Ultra speeds with no sweat - not all of them will.
Mine also dropped in overclock speed after running fine at 426/1100 for a couple of days of "no problem" and "my temps are low" so there is no other explanation to fall upon other than there is core/memory damage.
I put mine back on default settings and - you know what? I can't tell the difference in game play. It will run now at 400/1070 with no problem but I hardly see that it's worth it.
Do yourself a favor and ignore threads about 12+ 3dmark03 scores and only worry about performance if your game doesn't look good. If other people are running their cards at 435/1300+ with no problem that's fine, but it sure as hell doesn't mean your card will.