I have an Alienware M17x with a QX9600, 8GB of DDR 1333, Dual NVidia GTX 280M's w/SLI and 500GB 7200RPM Raid 1.

Why can I only get 20FPS in Arma2? I have done EVERYTHING over the past 2 weeks to try and get it running better. It's the only game that doesn't perform well on my machine. Is 20FPS all I will get? Anyone have a similar machine?