i dont know if its a must to enable 4x AA on my overclocked GTS 250 512mb card when i play new games like Just cause 2, bad company 2, etc to save performance. i have been playing at my native crt monitor which is 1600*1200 with 4xaa but with new games when i use AA it goes below 30fps often. today when i disabled aa on bad company 2, i played on all high settings on my native res, and the frame rate would rarely go below 30fps, mostly 35 and 32 even when fighting. was very playable without AA. just cause 2 was very playable on very high settings without AA on my native resolution. so u think i should play the new games without AA ? also any difference between the resolution of 1280*1200 and 1600*1200???