Extreme9 tri-fire 7970 problems

[KidkB]

Hello,

I just purchased an Extreme9 motherboard to use with my 3960X and three HD7970's and am currently having problems getting the 7970 in PCIE slot 6 to register in windows. The gpu's work fine as I have cycled through each one to be sure they are not DOA, and I can run crossfire on two, but neither Windows more Catalyst Control Center detect a third card. I have also changed crossfire bridges which did not resolve the issue.

Any ideas?

[MarkJohnson]

Re: Extreme9 tri-fire 7970 problems

sounds like you are running out of power on slot 6. What PSU do you use? make and model.

I assume they are in the proper PCIe slots 1,4 and 6.

Did you try PCIe slot 6 by itself?

Did you try all three cards at the same time not in crossfire? did you try other slot combinations without crossfire? Did it find all three cards?

Good luck
-=Mark=-