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Poor 580 sli performance?

post #1 of 21
Thread Starter 
So, just curious. Fellow ocn'r that I play SC2 with has sli'd 580s currently. He has them overclocked some (I don't know what amount). And I have this GTX295, at 684/1474/1094.

When we play SC 2, during scenes with tons of units and stuff we see very similar FPS, usually with me 5 to 8 fps higher than him.

He has a 2500k at 4.6ghz and I have a 2600k at 4.5ghz. We both play on the same size monitor, with the same resolution. I have looked on the internet and found different results as to whether or not it is DX11. I read it was DX 11 but used none of the effects of DX11. I read that on OCN, so if that is wrong then I don't know...

Just curious to why...

D
Edited by Ihasfip - 10/19/11 at 1:51am
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post #2 of 21
SC2 is CPU intensive.
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post #3 of 21
im the friend, im at 850/2150 oc right now. I'm on air, hes on water therefore he gets a better oc than me. I'm also on a 650w psu so I don't want to heavy oc these, and one of my cards run like 20c hotter than the other so I'll be returning that one.
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post #4 of 21
Thread Starter 
Quote:
Originally Posted by porky View Post
SC2 is CPU intensive.
Ok, but SC2 can't utilize my cpu any better than his, and his is Oc'd higher than mine.

D
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post #5 of 21
GTX295 is still a beast card, But not that beast too take on Dual 580s, Is his drivers utd? Drivers can sometimes make massive FPS gain.
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post #6 of 21
um

both your cpu's are within 100mhz of 4.5ghz


thats not a big enough difference.....your cpu's are holding you back!

that being said , both of you shouldent have a problem maxing that game out...

what are your average fps?
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post #7 of 21
You guys on the same resolution and in game graphics settings?
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post #8 of 21
Run some 3d mark 11 benchies and then see the difference
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post #9 of 21
Thread Starter 
Quote:
Originally Posted by AMDrocks View Post
GTX295 is still a beast card, But not that beast too take on Dual 580s, Is his drivers utd? Drivers can sometimes make massive FPS gain.
I believe he has the newest drivers, I am on the 285.38 drivers.
Quote:
Originally Posted by porky View Post
um

both your cpu's are within 100mhz of 4.5ghz


thats not a big enough difference.....your cpu's are holding you back!

that being said , both of you shouldent have a problem maxing that game out...

what are your average fps?
We both max it out....average fps I don't know...a lot. LOL BUT when there is a battle like in a custom game with like 600 units or something, he will drop below 10fps...like 7 while I am still 14 or higher usually. Pretty big difference considering hes on 580s...

Quote:
Originally Posted by HWI View Post
You guys on the same resolution and in game graphics settings?
Yes, 1920x1080 and max everything.
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post #10 of 21
Maybe 580 SLI drivers use more CPU than 295 SLI drivers. Possibly why Vestito's fps is lower despite having higher CPU overclock (100MHz faster).

SC2 only supports DX9 (Pixel Shader Model 2.0) even though the engine is allegedly capable of using DX10 effects.
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