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[Official] NVIDIA GTX 680 Owner's Club - Page 32

post #311 of 6048
Tom's just released a new review of OC 7970 and OC 680, apparently to high of a memory clock negatively affects performance? confused.gif

http://www.tomshardware.com/reviews/geforce-gtx-680-sli-overclock-surround,3162-11.html
post #312 of 6048
What voltage does evga include in the warranty up to how high if it breaks will they cover it?
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post #313 of 6048
Quote:
Originally Posted by MangosTea View Post

Tom's just released a new review of OC 7970 and OC 680, apparently to high of a memory clock negatively affects performance? confused.gif
http://www.tomshardware.com/reviews/geforce-gtx-680-sli-overclock-surround,3162-11.html

Yes, you run into ECC errors just like any other GDDR5 cards if you go beyond max stability, where there are no errors on memory speed, thus losing performance as it has to throw out data and re-check it.
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post #314 of 6048
Jeez, I'm kinda hating this boost technology just for the simple fact that there is such a wide variance in OC results for the 680 from review to review. Some sites are able to achieve very impressive results with OCing while others are very lackluster. I like the challenge presented with the new cards when it comes to OCing but I wish there was a way to disable it so we could get some hard numbers to compare with the 7970...
post #315 of 6048
Quote:
Originally Posted by MangosTea View Post

Tom's just released a new review of OC 7970 and OC 680, apparently to high of a memory clock negatively affects performance? confused.gif
http://www.tomshardware.com/reviews/geforce-gtx-680-sli-overclock-surround,3162-11.html

They claim overclocking the memory at all results in less performance.

I tested +0 vs +500 and it was about 3FPS better with +500 which is what'd I'd expect from this memory. +250 is about 1.5FPS better, so it adds up.
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post #316 of 6048
Anyone can confirm these results.

Stock Heaven:
680stock.jpg
OC'd
680oc.jpg
http://hardforum.com/showpost.php?p=1038530887&postcount=150
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post #317 of 6048
Quote:
Originally Posted by Murlocke View Post

They claim overclocking the memory at all results in less performance.
I tested +0 vs +500 and it was about 3FPS better with +500 which is what'd I'd expect from this memory. +250 is about 1.5FPS better, so it adds up.

Have you tried leaving the memory at +0 and gunning for a higher core clock yet?
post #318 of 6048
Quote:
Originally Posted by zpaf View Post

Anyone can confirm these results.

Low compared to mine... I got a i7 920 @ 4.2GHz and the card at +135/+500 which has been stable for hours now.

My temp comparison results were posted here if you want exact numbers:
http://www.overclock.net/t/1233434/680-overclocking-calling-all-owners/50_50#post_16795667
Quote:
Originally Posted by MangosTea View Post

Have you tried leaving the memory at +0 and gunning for a higher core clock yet?

Yes I did, core would not overclock anymore regardless of memory being +500 or +0. I have been getting rare flashes in Heaven, and im not sure why.. it hasn't happened in anything else and i'm not sure if it's driver related.
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post #319 of 6048
Quote:
Originally Posted by Murlocke View Post

Low compared to mine... I got a i7 920 @ 4.2GHz and the card at +135/+500 which has been stable for hours now.
My temp comparison results were posted here if you want exact numbers:
http://www.overclock.net/t/1233434/680-overclocking-calling-all-owners/50_50#post_16795667
Yes I did, core would not overclock anymore regardless of memory being +500 or +0. I have been getting rare flashes in Heaven, and im not sure why.. it hasn't happened in anything else and i'm not sure if it's driver related.

Thanks but you are with 4xAA not 8xAA.
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post #320 of 6048
Quote:
Originally Posted by zpaf View Post

Thanks but you are with 4xAA not 8xAA.

Ah my bad, I missed that. Then it seems about right.
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