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Crossfire Yielded No Better Performance? - Page 2

post #11 of 23
Have you installed the latest CAPS? Company of Heroes works fine with crossfire there shouldn't be any issues with it. Also there may be a small bottleneck but not to the extreme you are seeing in CoH so I don't think thats the problem. Best way to check for a bottleneck is to run some benchmark tests and compare your results with other 6950 crossfire users. Run some 3d Mark 11 and 3d Mark Vantage tests and post your scores.

AMD CAPS downloads and FAQ http://www.rage3d.com/cap/

Also did you do a fresh install of the drivers after you installed the cards?
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post #12 of 23
I see 99% usage in CoH. That's 4 GPUs, which indicates there is no crossfire scaling conundrum at work here. I adopted the Sandy Bridge unlocked 2600K specifically to ensure optimal GPU usage @ standard & Eyefinity resolution. The high overclock potential was a deciding factor, as high clock-speeds correlate to well nourished GPUs. If you can't keep them fed, you'll suffer from abysmal graphics utilization.

Quote:
PS: Welcome to the world of multi-GPU compatibility issues
With all due respect man, this is a misappropriation of blame. Besides the fact that Crossfire compatibility has matured to a level where negative scaling is virtually an extinct concept (irrespective of circumstances wherein a game engine has a literal incompatibility with AFR/Scissor/Supertile rendering), the rare glitchy releases are fixed so promptly, whatever issue exists can hardly classify even as a minor nuisance (much less a serious imposition to the experience).

I believe AMD has averaged 4 CAP releases per month in 2011; with a solitary example of "slow" rectification to a 100% fix. The example being Crysis 2, which nonetheless met with multiple CAP releases in the week following it's launch (and again, following the DX11 patch). It should be noted, though, that the immediate release-day 1.1 patch was directly responsible for botching multi-gpu performance. Unbeknownst to most, with an infuriated swell of users tripping over tweaks in hopes to resolve the nausea inducing flicker, all that was required was to replace Crysis2.exe with the preceding 1.0 version stored in the "backup" folder. My point being that, just as with the recent DX11 update, Crytek finagled AMD users from perfect out-of-box performance. It wasn't the technology or the driver/CAP team.

I see a ton of crossfire disparaging around this forum & others, with most comments made as though it were still the 4000/5000 technology days. Granted, most claims demoting crossfire would be perfectly valid in context of that era - having suffered from 5970 quadfire before abandoning it for 5970+5870 (& still experiencing oodles of compatibility imperfections in trifire, despite it being immensely superior the former), i have fresh memories of frustration common back then. This generation is so much improved, though, it's essential to keep those without 1st hand knowledge of that well apprised.
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post #13 of 23
Some things not right here I get rock solid 60 fps with vsync on and some thing in the 100+ with it off (every thing on max and 1080p). This is wit my sig rigg so I dont think its a CF profile issue. Those suggesting it's a cpu bottle neck are flat out wrong. CofH is not that cpu intensive and your rigg should crack the 100fps mark easy.
    
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post #14 of 23
Quote:
Originally Posted by Brandonn2010 View Post

Am I missing something?
The Crossfire bridge?

the small electronic ribbon that connects the two cards together?

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post #15 of 23
Thread Starter 
Quote:
Originally Posted by ChosenLord View Post
The Crossfire bridge?

the small electronic ribbon that connects the two cards together?

Oh man, I am so stupid...just kidding. I have both put on, connected to the only place they fit. CCC shows Crossfire enabled. I will try the CAPS thing. Unless they can be put on backwards.

EDIT: I already have the CAPS installed, but how do I use them, or is it automatic depending on the game I play? Also, does CCC have to be running?
Edited by Brandonn2010 - 8/3/11 at 4:43pm
post #16 of 23
If you close CCC crossfire is disabled.
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post #17 of 23
..yeah, am thinking benchmarks, other games?
    
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post #18 of 23
How many crossfire bridges you using? You said "both put on". My understanding is that 1 bridge should be used for 2 cards.
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post #19 of 23
Thread Starter 
Quote:
Originally Posted by Sir Beregond View Post
How many crossfire bridges you using? You said "both put on". My understanding is that 1 bridge should be used for 2 cards.
There are two spots the bridge can connect to on each card, near the ports. Does it matter which one the bridge should be connected to?
post #20 of 23
Nope.
The extra spots are for trifire.
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