I've been trying to get my two AMD Radeon 6800s to work in crossfire mode, but when I look there are no options to enable it in CCC. I downloaded and installed the application profiles too but they don't seem to appear:
There doesn't appear to be any options in the BIOS to change any PCI-e settings except the spread spectrum, but whatever setting I choose doesn't make any difference.
I've downgraded from CCC 12.3 to 11.5 and still no option.
Removed one 6800 from the system, uninstalled all software/drivers, restarted Windows, then put card back in (with crossfire bridge of course) and still no option.
My motherboard is an Asus Crosshair IV Formula, and I am using Windows 7 64-bit.
I used GPU-Z to find out whether something was wrong, and here were the results:
As you can see, one says it is @ x1 2.0 and the other @ x4 2.0 - however as there doesn't seem to be any BIOS options I am not sure how to get them at both x4 2.0
Any help would be greatly appreciated, especially if you've got the same mobo and cards. Pease feel free to ask any questions :-)
Thanks for your advice :-) Darn, I was hoping that wouldn't be the case - the crossfire bridge isn't long enough to reach from the first card to the second (if the second card was fitted in the third PCI-E slot).