See now ive herd/ seen and watched proof that the Nvidia 8800GTS Overclocked (575mhz core 1700mhz memory) is as good and regularly better than the 640MB Version at stock, ive herd that this is because only really big screens at high resolutions use the extra 320MB on the 640MB version, so why has crytek clearly statedin there recomended the 640MB version, or the 512MB X2900 series cards ?