why do u use AA at those resolutions its not a vary good idea maybee 2x since it dose it in the same frame buffer or 4x or 8x in dx10.1 since thats also in the same frame buffer so there is no performance drop, but over 2x in dx9 or 10.0 is a wast IMO, and i dont see a slow down with AF if i dont have AA on with my 3870 (in some stuff on the source engine i get more fps with more AF)