Thanks for the answer EvilScotsman, the reason I asked was that I'm planning an upgrade for my machine, which is AMD64 +3500, Sapphire X800XL 256mb, 1 Gb 3200 Corsair RAM, and I'm getting 15-25 fps on the ground and 35-50 in the air. Just wondering what to expect from a high-end PC with SLI, Lockon-wise.