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4870 X2 and Cat AI

Jonnygrunge

Jonnygrunge

Jonnygrunge

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Joined
23 Nov 2005
Posts
719
Location
Kingdom Of Fife
Guys have been on the green side of VGA cards for many moons now, and recently moved to the red side of the force with a 4870 X2! Not hugely famiar with the cat's! I take it Cat AI is driver level game optimizations? It has to be on right to enable crossfire? Is this the same with a single card? What do I set the optimizations to? standard or advanced?
Yours in gaming!

Jonnygrunge :confused:
 
From what I remember 'standard' is for known optimisations for games built into the drivers (iirc there is a dll you can decompile/view to get the list of games) and 'advanced' is a set of non game specific optimisations that the drivers will attempt to use on all games whether supported or not.

Turning it off obviously disables all optimizations.

Not sure what, if any, affect this all has on crossfire. Don't believe disabling Cat AI disables crossfire tbh.

Probably best to run some benches against the games you play to see what difference it makes.

But overall best bet is to just leave it on standard.
 
Turning it off does disable crossfire....I've not been able to see a difference between standard and advanced though.
 
Thanks guys i am running FC2 atm! AA x8 (edge detect) so 24 samples effectively! avg 67 fps @ 1680x1050, everything else maxed out in game! 16x AF forced on adaptive AA on quality forced through CCC. I love this friggin' card!

Jonnygrunge!
 
Very interesting ran some bechies on FC2 (Forced on through CCC, AA edge detect, AAA set to quality, 16x AF)

Settings:
Demo(Ranch Small), 1680x1050 (60Hz), D3D9, Fixed Time Step(No), Disable Artificial Intelligence(No), Full Screen, Anti-Aliasing(8x), VSync(No), Overall Quality(Custom), Vegetation(Very High), Shading(Very High), Terrain(Very High), Geometry(Very High), Post FX(High), Texture(Very High), Shadow(Very High), Ambient(High), Hdr(Yes), Bloom(Yes), Fire(Very High), Physics(Very High), RealTrees(Very High)

1st test catalyst AI advanced: Average Framerate: 60.67
2nd test catalyst AI standard: Average Framerate: 41.84

a lot less stuttering and screen 'tearing' on advanced! Think I'll leave it set to advanced for most games! :D

Jonnygrunge.
 
on a side note, with the latest ati drivers I had to disable Cat AI, as it made all my source engine games go incrediably flashy and flickery
 
I know what you're thinking of though, you used to be able to force AFR mode with CAT AI set to advanced if crossfire wasn't working as expected, this used to be of great help back in the days before CrossfireX where modes would automatically stick to the driver profiles and you could just turn on AFR mode at your pleasing. Now I believe the driver just defaults to AFR anyway since that is the best mode for ATI apart from exceptional circumstances where it isn't compatible (rare)
 
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