in the ARMA 2 demo, see worse performance (by about 2 or 3 fps) when running SLI then when I run a single card. I have no idea why.
when running on max everything and AA and AF disabled at my screen's native resolution, i get sub 25 FPS. which makes almost no sense because I get much better performance in Crysis. my 3d mark score is also similar to other rigs with my specification.
I want to buy this game because it seems great but if I can't run it, what's the point.
I just ran ArmA 2 lastnight for the first time. See my sig for system specs. I was getting 21-28FPS with everything maxed @ 1920x1080. Turning Shadows & Terrain up and down was the difference between 28FPS & 21-25FPS. Not very much change. However the shadows being set at "Very High" makes a huge difference in visual quality.
If I remember, I'll try to configure my ArmA 2 profile for Alt Frame 2 tonight and see if it helps any. Right now I'm using the default ArmA 2 profile in nHancer. Using the 190.07 driver as well.
EDIT: Oh, and I'm running ArmA2 with the 1.4 Patch.