well one test i.e farcry 2 isnt completely conclusive but nontheless nice testing crysis. so it seems running at 4aa you gain a fair bit. perhaps ten fps or so. but with 8aa not much dif.. i wonder what i will see at 1920x1200. i will test over the next few days... (i play with 4aa on most of the time maybe thats why i see more of a benefit. i find the diff between 4aa and 8aa in terms of looks neglible so i keep to 4aa and 16af).