- Jun 26, 2013
- 64
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So I have two EVGA GTX 660 SC's, and I'm trying to stretch their performance a bit further by overclocking. I am using EVGA Precision to do this. Problem is, only my first GPU seems to be overclocked, even though Precision is saying they are both overclocked. I am using FurMark to test, and when I am NOT using the overclock profile, GPU 1 core is at 1047 MHz, and GPU 2 is at 950 MHz. When I OC, GPU 1 is at 1150 MHZ (obviously OC'd), but GPU 2 still reads 950 MHz. There are no power issues, I have a 750 watt PSU and without the OC I only use 400 watts (under load). I am using Gen3 link speed since I have an Ivy Bridge CPU, and my SLI configuration is 8x 8x. So why is GPU 2 not overclocking? The software recognizes both GPU's, and increases their fan speeds as well.
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