Question regarding SLI and GPU loads

ibshortkid94

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Dec 2, 2012
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I recently installed a second 670 onto my system. After running some stress tests, I've noticed that only one of the GPU's are maxing out (the other is barely used). Is this how SLI works? I thought both cards would be maxed during a stress test.

As far as I know, I configured SLI correctly. Both cards have power and are connected via an SLI bridge. My motherboard has a molex connector for use with SLI Which I hooked up to power.
 

ibshortkid94

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Dec 2, 2012
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It's an Asrock z77 extreme6. The first gpu is in a 16x slot, while the 2nd is in a 8x slot from what I can tell. Although from what I've read, that shouldn't bottleneck it too much, especially not to the point where the 2nd gpu is at 20% usage at most.