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Overclocking GTX 580 SLI?

post #1 of 6
Thread Starter 
Hi guys,

I have GTX580 in sli and they're not overclocked. I'm not asking for guides or anything I'm sure I can find plenty however would it worth all the trouble?

Just a moment ago I started playing Anno1404 with the most extreme settings on 2560x1440 resolution. Man! I get an average fps of almost 25! That really cripples. I wonder how much would overclocking the GPUs increase the fps.

I don't like heat that much. Otherwise I know some of you would say the system is worthed to OC and stuff like that however all I'm asking is, how much can it possibly increase my avarage fps on heavy games such as the one I've given the example above??

Thanks for reading guys, I hope you reply!
Devvon
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Devvon
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post #2 of 6
if 580 sli on their own can't handle a 2009 game, overclocking would barely make a dent in performance. Try without sli to see if the game is more stable with only 1 card.

Has to be something wrong with the drivers, or you're putting too much unnecessary anti-aliasing on that 2560 monitor.
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by HomeDepoSniper View Post
if 580 sli on their own can't handle a 2009 game, overclocking would barely make a dent in performance. Try without sli to see if the game is more stable with only 1 card.

Has to be something wrong with the drivers, or you're putting too much unnecessary anti-aliasing on that 2560 monitor.
Thanks to your advice I disabled sli and game is now 2 times faster. That just doesn't make sense to me. Do you know why?

Also I've realised that when it was in sli, it would use 50% of GPU1 and 50% of GPU2. Never more than that. Now it uses 100%of GPU1 and 0-3%of GPU2 that results on 2x higher fps.

Also, since you said asked for it, I also tried turning anti-aliasing totally off to see how much it differs from (16xQ). When in SLI, only 5fps, when SLI disabled 20fps.

I knew not too many games support sli but I didn't know they would perform that worse..

------------------------------------------------


So as a conclusive question, What percent of performance increase would a good overclock to GTX580 make? Any thoughts?
Edited by Devran - 8/3/11 at 7:56pm
Devvon
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post #4 of 6
Is Anon1404 the only game with such a low framerate? If yes, perhaps there is bug with your game setup. Check for game patches.

Take a look at the pic below. At 2560x1600, GTX580 2-way SLI should have 100+ fps. Even a single card can do 55 fps. Granted these are benchmark numbers, actual gameplay should not vary too much.

Pic link:
http://www.guru3d.com/article/geforc...-sli-review/10
post #5 of 6
Hey, man dont freak out about anno 1404, i have it, and i get 18 fps when i push the fast forward button, sometimes when I move around my screen at normal gameplay speed fps goes down also. Its the game it self, got serious problems.

You should see when the volcano explodes, everything freezes and goes back to normal.

Really like the game, but that FPS problem doesnt make me wanna play anymore.

Cheers.
post #6 of 6
Thread Starter 
I've just figured out why. Never mind anything I said in my previous post. And sorry for all.

I think there's a bug or a problem with the water reflections. When I turned it off, I started getting 100+ fps with 16xQ antialiasing.
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