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Does SLI limit overclocking ability? - Page 2

post #11 of 22
yep, one of my GTX 260's (the evga one) will do a 733 core easy, where as the BFG can hardly pull 660 so i have to run at 660
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post #12 of 22
Thread Starter 
strangely I didnt see a voltage monitoring option with the rest of them where you can tick to make them available, like I used to with version 1.61........Thanks for the info, so you would assume one of my cards is only capable to just over 900 then? OR would running the card at higher frequency increase powerdraw? im running my i5 @ 4GHz which is really not necessary im sure, and probably draws a hideous amount of power, shall I set it back down to 3.2GHz and see if the cards still crash when set to 950?
    
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post #13 of 22
lol you can untick anything you want,it wont help but what would i know i only have a few posts
you need a dmm thats the only way to read volts,even if someone with 10000000 posts tells you otherwise.
post #14 of 22
Thread Starter 
i know mate, i just dont have one and dont see the need to get one when msi should show me the voltage
    
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post #15 of 22
So, wait ... you don't have the voltage monitoring graph in Afterburner, nor even the checkbox in Settings to 'enable voltage monitoring'?
    
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post #16 of 22
The Nvidia 2xx drivers support different clocks for any nvidia card in SLI. When it comes to overclocking in SLI, my exprerience with 2xGTX 260 in SLI is infact that one of the cards (one in pci-e slot 1) actually reached a higher clock when in SLI modus, then it did alone. I think this has to do with the fact that when running SLI the workload gets spread between the cards. Remember seeing 50% GPU load in several games when using SLI. And when in singel modus it showed almost 100% load.

Also in my case I used one GTX 260 65nm core 192, and one GTX 260 65nm core 216. I would benefit from all those cores, not just 192 x 2. Same goes with clocks. If one card is clocked higher than the other your performance will benefit from this. Later nvidia driver DOES NOT clock down the highest clocked card to match the lowest clocked.
Edited by turrican9 - 12/28/10 at 9:05am
    
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post #17 of 22
Thread Starter 
Breetjv - correct it's strange. Ive read that theres two tiers of overclocking in afterburner when using an msi product, meaning it different until configured, maybe I need to enable unofficial overclocking like I used to before. I'm pretty happy now knowing that many don't get higher than 900 using +100mv, but I now need to know what the maximum safe voltage is for these cards? I've read everywhere and nobody offers a definitive answer.
Edited by Juliancahillane - 12/29/10 at 3:50am
    
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post #18 of 22
I'd try going back to the 1.6.1 Afterburner version. Honestly, I kinda think the memory OC and PLL voltage don't do that much anyways, and that they're still working out the bugs in AB when using these features.

I'd also jump in w/your issues over at the Guru3d forums, in the Afterburner app section. Unwinder (maker of Rivatuner and part of the AB team) hangs out there a lot. Warning: he's a pretty un-diplomatic and gruff character, don't expect politeness from him.

http://forums.guru3d.com/forumdisplay.php?f=55

Make sure you read the FAQ, and do a thorough search of the forums before you ask stuff. People there are kinda dickish about people re-asking stuff that's already been addressed ... just a heads-up
    
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post #19 of 22
Thread Starter 
Haha will do mate +1
    
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post #20 of 22
Quote:
Originally Posted by Juliancahillane View Post
Haha will do mate +1
+1 what?
    
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