5870 AA

[cry_monster]

hey all. i have a ASUS EAH5870/G/ overclocked to 950core and 1300mem, my issue is playing Crysis when adding the AA to 2x up to 8x. i average 50FPS in 1080p everything set to the highest setting and no AA. But as soon as i add just 2x AA my FPS drops to 40 which i think is a bit to far of a drop, then i up it to 8x AA and my FPS is 12. is this a problem with my card? i see this quite often with ATI cards and crysis but i think it has to do with the game. no other game has this issue. but then i put in my GTX480 which is OCed exactly the same to test, i apply the same setting and 16x AA and i still average 50FPS. does crysis's AA function only work correctly on Nvidia cards?

 

[jefe323]

adding aa puts a lot of strain on the gpu (no matter the brand)

 

[cry_monster]

yea i know, but why does my FPS drop on my 5870 so much my gtx480 has little drop.

 

[jefe323]

480 is generally a stronger card then the 5870

 

[cry_monster]

i fixed it. there was an issue with visual mod.

the GTX480 is only stronger in tessilation, in DX10 and other DX11 features the 5870 still takes it.

 

[jedimasterben]

Crysis was written to run on nVidia cards, and has little optimization for AMD cards, especially in the neighborhood of AA, so it has a double handicap on that game in comparison to your GTX 480.