I can get crossfire to work, but it actually hurts my performance. Here's my rig
MSI K9A2 Platinum
Athlon 64 X2 5000+ BE @ 2.99GHz/230MHz FSB
2GB Geil DDR2 PC6400 4-4-4-12
2 HIS HD3870's 810/1126
When I have Crossfire turned off, I can run Arma 2 at 1680x1050 with everything at high, except AA disabled, and get a pretty solid, playable 25-30fps.
When I turn crossfire on with normal setting for texture qual/v. memory, either in the advanced or standard Cat AI modes, my framerates seem capped at about 30, then drop pretty quickly to 3-5 or even 1 fps, and I get wierd texture issues, where certain textures, usually the ground, starts to flash white, and it gets worse and worse unless I set vmem/tex. quality to low. That doesn't happen when crossfire is disabled. Temps on both cards stay at about 55°C because I have the fans set to full blast. Also, when I have crossfire enabled and the tex quality set to low, no matter what I change all my settings to resolution/detail, 30fps is about as high as I can get sustained. That is, no matter whether I max everythign out or turn everything off, I still get about 30 fps. Vsync is forced off in CCC. Any suggestions?
