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Crossfire Questions

post #1 of 24
Thread Starter 
I currently have two HD3870's. In CCC i have "CrossfireX" enabled since thats what it says when i installed the new 8.6. Is there any positive way I can find out of both cards are running in Crossfire?
    
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post #2 of 24
i had the same problem, two things i did

run a game with crossfire enabled and make a note of your aaverage fps.
disable crossfire and the play the game again, if your fps has droped then crossfire was probally working before, antoher way of testing is to have a look at the temps they should roughly be the same if crossfire is working if it isnt working one will be high and the other will be considerably lower
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post #3 of 24
Thread Starter 
If that happens how do i fix it. Because one gets up to 57C and the other stays at the 40C idle.
    
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post #4 of 24
That could just be a bad mount on one of them. The temps aren't a good indicator.

Check GPU-Z (make sure crossfire is enabled).

And for simplicity's sake. Download a free copy of 3dmark06. Take out 1 card. Bench it. Add in the second card, verify crossfire is enabled. Bench it again and be amazed!
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post #5 of 24
That is inaccurate. The top card in a crossfire setup always runs hotter than the lower card.

I had some troubles with setup as well. I had to uninstall and reinstall the drivers.

another way to check is to use gpu-z to check load on both cards.
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post #6 of 24
Thread Starter 
I heard Gpuz is a bit buggy.
    
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post #7 of 24
im running 2 hd3870s and when playing a game they both get to arounf 70c infact sumtimes the 2nd card gets hotter then the first, it sounds to me as thou crossfire isnt workign correctly, try go into ccc and go to the 3d options in there, there is something called catalyst A.I enable that and set it to advanced, that should crossfire to work for u, also do the 3dmark test and see if your scored differ when crossfire is enabled mine jumped up around 8000 when i had crossfire workinng correctly so you should know when it is.
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windows 7 ultimate x64 50" lg at 1920x1080 and 24" samsung 3d monitor 850 watt corsair TX850 corsair 600T white graphite limited edition 
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post #8 of 24
Thread Starter 
so if the AI can go advanced CF is enabled?
    
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post #9 of 24
Thread Starter 
ahhh The gpu load hits 53% on my main card but 0% on my second something is wrong.
    
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post #10 of 24
if CCC says it is enabled then it is......
    
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