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My GTX 680 SLI performing lowly... - Page 3

post #21 of 25
Thread Starter 
Quote:
Originally Posted by brettjv View Post

Have you checked what your bus inteface is running at in GPU-Z? Make sure to run the render test (click the ? icon) when checking it's value. It kinda seems like maybe your card(s) are running at too low of a bus speed.

Also if you have a different SLI bridge you can try ... do that.

I did what you said with GPU-Z. The speed was going back and forth from PCI-E 3.0 x16 3.0 and then to PCI-E 3.0 x8 1.1
 
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post #22 of 25
Quote:
Originally Posted by iPDrop View Post

I did what you said with GPU-Z. The speed was going back and forth from PCI-E 3.0 x16 3.0 and then to PCI-E 3.0 x8 1.1

Should be running both with 3.0x16? cuz both mine 680 running 3.0x16 3.0
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post #23 of 25
Quote:
Originally Posted by iPDrop View Post

I did what you said with GPU-Z. The speed was going back and forth from PCI-E 3.0 x16 3.0 and then to PCI-E 3.0 x8 1.1

It was fluctuating like that while the render test was running? Well, that should not be happening, and if you're running at 8x in 1.1 in the Heaven test, it might well cost you frames like this.

You should check your Windows Power Options, and disable the PCI-Ex power saving options, see if that fixes the issue.

Put this setting to 'Off'

    
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post #24 of 25
Thread Starter 
it already was off, and no the bus speed stayed at x8 3.0 during render test
 
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post #25 of 25
iPDrop, you may need to improve you NVcontrol panel settings. I found that the configuration I have now Is optimal for performance and quality.



Also, when you begin your benchmark I found that if you wait about 5 seconds before you hit the benchmark button your initial minimum frame will be much much higher thus improving your score. What this does is it allows the benchmark to smooth out because when it starts initially it's really laggy for the first couple of seconds. Once you do that the transition will be flawless.

When you select your resolution make sure you leave it on "system" and do not manually select 1920x1080. I found that this improves results a bit more.

And OC that 3770K!
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