ATi Radeon 4890 Discussion

[BFG10K]

Originally posted by: thilan29

Is there a performance hit going to either positive or negative?

I would expect a negative value to cause a performance hit, while a positive value should increase performance.

 

[thilanliyan]

Originally posted by: BFG10K

Originally posted by: thilan29

Is there a performance hit going to either positive or negative?

I would expect a negative value to cause a performance hit, while a positive value should increase performance.

Thanks.

EDIT: I tried in Crysis setting it between -3 and +3 and it didn't really affect performance...and no real changes in IQ I could see. I changed it from within ATI Tray tools.

 

[BFG10K]

These days the setting may well have been depreciated. Back in the day it was popular because AF was either non-existent or prohibitively expensive. Now with 16xAF basically only incurring a 5% performance hit, there?s really no point to a negative LOD.

AF, unlike a negative LOD, increases texture sharpness without introducing texture aliasing, so it?s always more desirable.

Have you tried the texture mip-quality slider in CCC? Setting it low would probably approximate what a large positive LOD would do (i.e. it?ll make everything blurrier and increase performance).

 

[BFG10K]

Locked due to new sticky thread.

Video Mod BFG10K.