CrossFire setup help!

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EggyDevil

Distinguished
Jan 9, 2013
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0
18,530
Hey guys,
I've recently got a second HD 6870 Radeon GPU and crossfired them. I have a Corsair HX750 and have 2x6pin on each GPU,
However when in game, such as BF3, there is a very big performance difference:

GPU1:
http://imageshack.us/photo/my-images/259/gpu1.png/
GPU2:
http://imageshack.us/photo/my-images/109/gpu2.png/


Please let me know what I can do to fix this.
Kind regards,
Eggy
 
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quentin16564

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Sep 1, 2009
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Check CCC to ensure the CF is enabled, download MSI afterbuner to monitor in game GPU usage. Also CF doesn't work if your playing the game in windowed mode. So hit alt+enter while in game to make sure its full screen.

i though i had mine in full screen, after about an hour of digging alt+enter fixed the issue. have to love it whens its a simple fix.

http://www.overclock.net/t/1179988/guide-on-screen-gpu-usage-via-msi-afterburner
 
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