AMD Raedon HD 6950 Crossfire is making performance worse

exxons

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Jun 19, 2013
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Hello, 2 years ago i bought a new, quite expensive desktop. I can not remember when but a while ago i noticed that most games were not running smooth. I tried to disable crossfire, and then it worked perfectly. I wonder, why is one graphic card working better on all my games than two, i know it should be the other way around. So what can the problem be?

Specs:
Chieftec 750W, CFT-750-14CS
ASUS P8P67 DELUXE B3 P67
Intel Core i7 2600K Quad Prosessor 3.4GHz (overclocked to 4.4 GHz)
Mushkin DDR3 4GB Silverline (x2)
Intel 120GB SSD 510 2,5" S-ATA III
Samsung 1 TB 7200RPM S-ATA2 32M
ASUS Radeon HD 6950 2GB GDDR5 (x2)
Microsoft Windows 7 64bit Home Premium

I tried resetting the settings on Catalyst Command Center to factory defaults, this did not help.

I am really hoping for answers, the only solution i see right now is to buy a new graphic card, because a single 6950 does not give me the right feeling when i play. I hope you guys can help me :)
 
I run 1 2gig 6950 and have no problems with any games....... depending on processor. yours should be fine.

I did run 2 cards once in a while. not always the best thing to do. biggest single card is and probably always will be the way to go.

you may need to look to see if those games are xfire compatible. And/or look at the games control panel and make adjustments.??
 

exxons

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Jun 19, 2013
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COD BO2 (all the other COD games to), BF3, LOL (Lags only the first seconds and then sometimes later i get some crazy FPS drops)
 

centaurius

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May 2, 2012
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Unistall completyy drivers and reboot in between. Disable hyperthreading in BIOS so i7 acts like a 4 core only, and disable OC in CPU also. Install drivers with stock clocks, reboot, enable crossfire,reboot and try the games. If things are good you can enable again hyperthreading and check. If good you can OC 100 Mhz at a time to see how it goes.