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Left for dead 2 bad performance in SLI?

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peeler05
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2012/01/02 16:05:10 (permalink)
Is it just me or is this game worse in SLI. I get around 70-90 with 2 580s. Both of them are around 45 gpu usage. I have prefer max performace on. Why is it that I get better performance with just 1 580? And for some games, do you have to turn of SLI to get better performance ? 
post edited by peeler05 - 2012/01/03 08:12:13


 
 
 
 
 
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    malVizio
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 20:37:20 (permalink)
    you tried to install evga SLI patch?
     

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    peeler05
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 20:42:17 (permalink)
    malVizio

    you tried to install evga SLI patch?


     
    Never knew this existed . Thanks, will try.


     
     
     
     
     
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    malVizio
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 20:44:52 (permalink)
    http://www.evga.com/articles/00463/
    let me know if it works...

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    HeavyHemi
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 22:07:04 (permalink)
    That patch isn't going to add anything for Left4Dead 2 as it's had a profile in the drivers for a long time.  I'm running the latest BETA and with vsync forced off in the NVCP, I'm averaging nearly 200 FPS with every setting the game maxed at 1920x1080.

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    malVizio
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 22:14:10 (permalink)
    i think so...it's an old game sli conf should be already out...
    tried different drivers?

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    EVGA_JacobF
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 22:40:30 (permalink)
    What resolution and settings? Most Source engine games are primarily CPU bottlenecked.


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    HeavyHemi
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    Re:Left for dead 2 sucks in SLI? 2012/01/02 22:45:43 (permalink)
    EVGA_JacobF

    What resolution and settings? Most Source engine games are primarily CPU bottlenecked.

    You'd think he wouldn't be having that issue with 2600k at 4.5ghz.... Something is borked in his setup even if he was running at 2560.

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    peeler05
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    Re:Left for dead 2 sucks in SLI? 2012/01/03 07:45:24 (permalink)
    double post
    post edited by peeler05 - 2012/01/03 07:51:51


     
     
     
     
     
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    peeler05
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    Re:Left for dead 2 sucks in SLI? 2012/01/03 07:51:01 (permalink)
    I would get 200 + fps with 1 580 and 2600k, but when I hooked up my second for sli it stays around 70-90. Do you have to setup a custom profile for this game? Im using 1080p and it just seems to be this game. Games like metro 2033, and BF3 run as they should in SLI. Any specific settings I should look for that might fix this in the nvidia control panal? The physics option is on nvidia prefered, is that the best option? Jacob saying that source is a lot CPU make me think multi core rendering setting in the game got turned off for some reason. Thanks for the help
    post edited by peeler05 - 2012/01/03 08:10:18


     
     
     
     
     
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    peeler05
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    Re:Left for dead 2 sucks in SLI? 2012/03/03 22:10:58 (permalink)
    Still having problem with this game. I figured out that when I have it at "windowed (no border)" I will get around 80-100 fps. The only way to get back to 200 + fps is to change the AA from 16csaa to 8xmsaa. I have to do this every time it changes the map (or when it goes to the next level of the round). It doesn't matter what the AA is set, as long as I change it, to let the game re adjust it self, it will go back to SLI FPS. This doesn't happen in "fullscreen mode", in this mode I get the SLI FPS. However, every time I leave a game, the game gives me an error and freezes up. Anyone else who is using 2 580s for this game having this problem? Too weird. If you are having bad fps in SLI, make sure you are in Full screen mode and not run in window mode (but then you probally cant alt tab between deaths, otherwise it freezes... the only reason I set it to run window no border mode was so it wouldnt freeze when i alt tabbed)
    post edited by peeler05 - 2012/03/03 22:25:41


     
     
     
     
     
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