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How To: Overclock Your AMD / ATi GPU - Page 54

post #531 of 644
Great guide! It helped me alot.
CPU Bottleneck
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CPU Bottleneck
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post #532 of 644
Hello guys, I just flashed my MSI Twin Frozr III with the official MSI's shaders unlocked BIOS. Now I'm trying to overclock the card with AB 2.2.0 Beta 8, but it seems that I can't set the voltage over 1.149V (actually, I can set it to an higher value, but in the monitor I continue to see 1.149V...). I modded the .cfg file in the Afterburner's folder... what can I do to unlock the voltage "for real"?

EDIT: NVM, I just read the 2nd post.
Edited by autior - 10/8/11 at 9:38am
post #533 of 644
So I just got my second VGA Cooler and I'm ready to OC my 2 6870s but I have one question. Obviously all GPUs are not the same even if they are the same model so my question is for multi-GPU setup where it says "Before you begin make sure 'Synchronise settings for similar graphics processors' is ticked in the 'Settings' screen of MSI Afterburner." If no 2 cards are alike then why should some one with multi-GPU do this since one clock might work for one of my cards but might cause artifacts on another. Or am I missing something? And if it is the case that I have to clock them seperatly does that mean that I'm going to have to be un hooking them in the back and inside and what not to do one at a time? And if so should I do them sepperatly or does it compensate for them both being in crossfire?

Also when a safe Overclock is found doesent it stay overclocked always? Meaning you dont have to turn it on or anything when the computer loads up it should already be OC'd right?
Edited by Vita - 10/19/11 at 1:33pm
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My Mistress
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post #534 of 644
Guys, I have an XFX 6850, the basic one. Stock Core Clock 775MHZ / Mem Clock 1000MHz.

I tried the method in this tutorial. After several hours of testing, I found Core Clock 900MHz / Mem Clock 1150MHz was the best stable config I could get. Stock voltage. Max temp 75C with GPUTool bench and auto fan mode. And 70C while gaming (Crysis 2) manual fan set to 100%.
But I'm wondering if this seems stable to you?

I've tested Crysis 2, High settings, DX11 enabled, Hi-res text enabled:
Stock : 66fps average.
OC'd: 78fps average.

That's a difference of 12 frames. I was impressed.

Though, with ultra settings, the difference was of just 3 frames.
Edited by xutnubu - 10/21/11 at 2:52pm
Just "PC"
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Just "PC"
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post #535 of 644
After having stabilized my CPU overclock I tried messing with my ASUS 6970 using this guide.
But I could only get my core clock up to 920MHz before I started running into issues. Could it really be that my max is only 920MHz?
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post #536 of 644
Ok, anybody can please explain what is going on here?
I have done a couple of test, everytime the results were similar.





Sorry for the second pic being cut, I mailed them to my laptop to write this topic later and didnt noticed it before.
But you get the idea
My System
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My System
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post #537 of 644
Quote:
Originally Posted by Morit View Post
Ok, anybody can please explain what is going on here?
I have done a couple of test, everytime the results were similar.





Sorry for the second pic being cut, I mailed them to my laptop to write this topic later and didnt noticed it before.
But you get the idea
Core clock 440 to 880? It's just too much. Seems that it's unstable.
Edited by MooMoo - 11/8/11 at 2:53pm
It's alive!
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It's alive!
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post #538 of 644
Noo.. The first one is underclocked. And I have better performance with it.
The second is pure stock.

And both are stable of course
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My System
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post #539 of 644
Is GPU Tool still good enough to stresstest? I OC'd my 5970 a bit and while running GPUTool the usage on both cards only was about 90%. Shouldn't it be at 100% since its a stresstest?
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post #540 of 644
just watch out for EDC when OC'ing the ram
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