Crossfire X Users

it will have small pause if I set to max AA while on single 5870..

it seems it have exceed the memory buffer there..
 
Last I checked it'll do that for everyone.

Even my GTX470's do it and my 5870's in different machines.
 
Using your settings at 2560x1600 I am seeing some hitching on dual 5970s - this applies to every level of MSAA for A-tested objects. Not a huge game breaker, its playable, but not ideal.

Reducing the overall MSAA to 2x reduces the hitching; turning off MSAA eliminates it altogether. If I were playing this game, I would probably turn off MSAA and run everything else at their highest settings. Minimum FPS with MSAA off was also much improved (40-60FPS) vs. 2x or 4x MSAA (in the low teens.)

I also tested Catalyst AI standard vs. advanced, and normal AA vs. Adaptive AA; no real difference in the 'hitching' experienced.

I ran the test using 16xAF and texture filtering set to 'highest quality.'

Based on the testing, I think this is a frame buffer issue, with the hitching resulting from VRAM-to-RAM memory swaps or something similar.
 
You must log in or register to reply here.
Back
Top