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6800 GT Overclocking...

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imported_ewright

Member
I OCed my GF3 & GF3 Ti500 about 10% on core & mem, and did same with my GF4 325/725 from 300/650 (not a massive OC). After about 18 months, I couldn't play anything at 325/725 without artifacts. Still worked at defaults, but started to choke on the small OC that had worked just fine for over a year. Someone at NVNews said it was because damage had been done to the card...but even when it got artifacts or locked up, heat NEVER reached excessive levels, which tells me that heat wasn't the limiting factor.

I'm asking because I now have a 6800 GT, and I read all over the 'net how people are pushing them way past Ultra speeds with no problems. Autodetect reports 410/1150. And while Doom 3 played fine at 16x12, HQ, 4xAA & 8xAF, I'm finding the outdoor scenes in FarCry much slower at comparable settings. So now I'm itching to OC my card to Ultra speeds (400/1100 is all I want). Card now idles at about 50c, reaches 70c under load.

So was the guy right? That a mild 10% OC can damage the card over time even if heat isn't an issue? Everything I've read hints thats not the case, but I don't want to push the card now only to find it can't OC later like my GF4...
 
The GT does run slow in Far Cry with everything maxed at 1600 x 1200. I lowered my AA to 2x instead of 4x and it still slows down at times while gaming. Don't count on getting a 10% or more overclock. You may get a great overclocking card but, nothing is guaranteed. My card does not reach Ultra speeds. If I try to overclock too much (especially the memory) Far Cry will freeze for 4 - 5 seconds then play for 15, then freeze again 🙁
 
My eVGA 6800 GT is clocked at 400/1100 MHz. I play Far Cry at 1152x864 with v-sync enabled, antialiasing on high, and every setting maxed. I usually get 60-65 FPS, with my computer dropping down to 40 FPS on rare occasions. I don't know if that helps you gauge your performance or not, but that's the kind of results I'm getting with my card overclocked to Ultra speeds.
 
Originally posted by: ewright

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So was the guy right? That a mild 10% OC can damage the card over time even if heat isn't an issue? Everything I've read hints thats not the case, but I don't want to push the card now only to find it can't OC later like my GF4...
Click to expand...


Yes that guy was right. I wouldn't call it 'damage' since its not designed to last forever anyway. More like shortening the lifespan. You must had some bad luck as well since 10% isn't really pushing it. On the other hand Cpu/gpu manufacturers currently IMO aren't quite as concerned about long term reliability given that the practical life span of their products don't quite last 5yrs as compared to the older days. I've had vid cards like the TNT2 no oc just dropping dead because of a lousy stock heatsink.

I would hold off ocing until later since it should work great out of the box.
 
I don't overclock often... I attempted it because of the Far Cry performance (or lack of performance). I game at 1600 x 1200 (native resolution on my LCD). When I used coolbits it would give me acceptable frequencies of 415 core (sometime 425) and 1100 or a little less memory.

This was not correct as the game had the problems I mentioned before. I noticed that I would also have problems in Halo at 380 / 1050 (I think???)
 
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