Will a single 260GTX run Crysis @ 1280×1024 dx10 max?
If the GTX 260 is as fast as X2 in a given title I am of the opinion said title does not have a proper working Crossfire profile yet in the driver. Ie the card may perform roughly like a single HD 4870 or worse in some cases. The X2 is only 2FPS faster than the HD 4870 in Warhead. That should speak for itself.