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6950 crossfire issues

post #1 of 7
Thread Starter 
Well I got my third 6950 to troubleshoot with... I am on my way to work now.. but installed new one with unlocked shaders with a stock one and the same uissues.. I get a measely 40 FPS inTF2 with a single card I get 100-200 FPS. I am thinkijng it is my mobo...have tried 11.2 and 11.3 drivers... I get the same thing in crysis... better performance with one card

Any help would be appreciated
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post #2 of 7
Quote:
Originally Posted by soth7676 View Post
Well I got my third 6950 to troubleshoot with... I am on my way to work now.. but installed new one with unlocked shaders with a stock one and the same uissues.. I get a measely 40 FPS inTF2 with a single card I get 100-200 FPS. I am thinkijng it is my mobo...have tried 11.2 and 11.3 drivers... I get the same thing in crysis... better performance with one card

Any help would be appreciated
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Have you tried other games besides TF2 and Crysis? I heard there are issues with TF2 in particular right now. Not sure where that thread ran off to, however.

You could give 11.4 drivers a shot, I am not seeing any issues with them in Crysis.

We could probably do better with a GPU-Z shot for each card for a little more troubleshooting ammo.
Edited by BlahBlahBlah - 4/20/11 at 10:34am
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post #3 of 7
Thread Starter 
Yeah...seen less performance playing dragon ageII as well

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post #4 of 7
I can't speak for TF2, but Crysis and Dragon Age 2 work fine for me in crossfire. I just retired a couple of 5850's for the 6950's and have had numerous issues in getting my setup to play nice. I didn't have decreased performance with crossfire as you are having, but I did have some issues with getting CCC installed properly and enabling crossfire. I found driver sweeper wasn't catching all instances of the previous ATI drivers and software and ended up having to manually remove them. You may want to try that route as well. This link http://www.overclock.net/ati-drivers...-software.html will tell you other areas to look for removing all instances of ATI software.

Since going with the manual route for removing drivers and installing the 11.4p drivers I have had no issues with crossfire. Overclocking beyond CCC limits, is another story that after many BSOD's I finally solved with a CCC reg hack which can be found here http://www.techimo.com/forum/graphic...reg-entry.html.
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post #5 of 7
Like everyone is suggesting, try with 11.4 drivers. Although I would not recommend using driver sweeper right off the bat. Try just normally uninstalling, reboot, install 11.4, reboot. Ensure crossfire is enabled in CCC. Install crossfire profiles from the AMD website while you are at it.
I am running fine with crossfire. I got v-sync on and get a solid 60 frames all the time in dragon age II.
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post #6 of 7
I got a 7fps boost with 11.3 (vs 10.12a) using metro bench ala the bench thread settings, in tril sli. Crysis 2 is the same 40fps under 3 screens, max settings.
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post #7 of 7
That motherboard shouldn't at all be an issue. Its bound to be a driver problem. I've read about cases with the exact same symptoms you have: Low FPS with CFX but Higher FPS with single GPU. In all the cases I've read about however, they were using mobos with the 16x and 4x pcie configuration. The x4 was holding back the other card so they were both suffering.

This would be a bit laborous but you should try running both cards individually and see what scores you get with them. Just to rule out one of the cards having a fault. Other than that, its a software issue. Good luck!
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