Quote Originally Posted by Trike View Post
I found an easier way to OC in crossfire mode, if you run dual monitors. I have one monitor hooked up to the primary card, and the second monitor hooked up to the secondary card.

Disable crossfire.
Go into display settings and extend desktop to the 2nd monitor.
Launch rivatuner or whatever apps you use to OC. (I have only tried rivatuner)
Select your cards, and overclock them. Shouldn't matter which card you choose first.
Then enable crossfire. (this will disable the second monitor)
tried that method a few mins ago. i set stock xt-clocks 740/825 on both cards (fan@100% just to be safe) and veryfied the clock change with gpu-z. the clocks were set and the pixel fillrate, texture fillrate and mem bandwidth increased on both cards, but the fps in 3dmark06 dropped by 10fps. i didnīt run the full benchmark cause the first few seconds were enough to see, that the oc wasnīt good.
i really hope that there will be a clocking tool out soon that is fully supporting this card.