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Problem with Crysis + Catalyst A.I.

post #1 of 13
Thread Starter 
After seeing my friend purchase a 4870 1GB, and get almost similar performance as me in Crysis, I began to wonder if anything was wrong. We're both running XP 32-bit, a Q6600 @ 3.2ghz, and have 2GB of DDR2-800 RAM, and are both running very few processes. I tried disabling Catalyst A.I. to see what my performance would be if I had a 4870 1GB. What I found out surprised me. This was taken from the start of the "Assault" level, as you get out of the VTOL in the beginning, with all the explosions going off:

Catalyst A.I. Standard/Advanced (same): 20-22fps
Catalyst A.I. Off: 26-27fps

And this was taken on another area of the level with less action:

Catalyst A.I. Standard/Advanced (same): 55-57fps
Catalyst A.I. Off: 35-40fps

So basically, it seems I'm getting a higher maximum, but lower minimum FPS with Crossfire on. My CPU temps are slightly higher than his (peaking at 66c on RealTemp), but they're safe. I'm not sure how (8x or 9x multi) he reached 3.2ghz though. Mine was via 400x8.

Anyway, any ideas on why this is the case? GPU-Z shows 0% activity when A.I. is off, and almost equal usage on both cores if A.I. is on.

I'm just curious about my minimum FPS. And I'm hoping I can do something about it.

Thanks in advance!

EDIT: Almost forgot, when Catalyst A.I. is on, GPU-Z shows that neither core is being fully utilized, whereas when it's disabled, the first core is almost constantly at 100%, while the other core is at 0%. Does that sound right?
Edited by ArcticZero - 12/14/08 at 7:23am
Cheezburgerz
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Cheezburgerz
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post #2 of 13
Did you try reinstalling drivers? something sounds fishy here to me..
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post #3 of 13
Thread Starter 
Well this is after I did a reinstall of the drivers. Uninstalled the old ones, rebooted, installed 8.12 official, rebooted. I've tried this on two XP partitions: one with all my programs, and one "benching" install with nothing else on it. I get a tiny bit more FPS (1-2) with my fresh install, but I essentially get the same effect...

I was actually hoping to have a more significant performance increase compared to a single 4870 1GB.

I certainly get a higher max FPS than my friend, but a lower min FPS is just weird...
Cheezburgerz
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post #4 of 13
55 fps on crysis = amazing, what settings are you playing, and what is your friend's resolution?
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post #5 of 13
Thread Starter 
Well, we're both playing at vanilla High spec (just for comparison). The FPS from the first post are at 1680x1050. My friend uses 1280x1024, yet even if I match his resolution just to test, I still get lower min FPS than he does with A.I. on. If I turn it off, my min FPS matches his, but my max FPS takes a nosedive.

While 55fps IS amazing, it's the low-20's fps areas/drops that kill it.
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post #6 of 13
V-sync is on or off for both you guys? Also are you using CRT or LCD? Just asking and am thinking as I too have no answer yet.
    
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post #7 of 13
Thread Starter 
V-sync is forced off in CCC. I'm using an LCD, and he's on a CRT. But we bench-played at 1280x1024 just to get a good performance comparison.

However the framerates I posted above were at 1680x1050.
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post #8 of 13
catalyst AI increases cpu usage so maybe thats why you see framerates dip in AI heavy areas.
    
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post #9 of 13
Thread Starter 
Hmm, upping my overclock from 3.2ghz to 3.4ghz yielded no performance gains in Crysis. 3dmark06 score shot up, but Crysis stayed the same.
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post #10 of 13
I really don't understand why everybody is so crazy about this game Crysis. Its engine is absolutely not well optimized and just a buggy game. And no doubt it is an nvdia game and to the way better optimized to give better performance with all the nvidia cards out there.

You'll never get the best out of your ATI card with that Crysis because it's for sure not optimized for it.

You have the fastest graphic card on the market up to date. It is a monster.

Lots of other first person shooter games out there better than Crysis. Play one of those and be happy. And let makers of Crysis understand that there are millions of ATI users out there who does not care about a game that is not well optimized for their graphic cards.
Edited by Prong - 12/15/08 at 4:46am
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