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Unlocked 6950 crossfire 60-30fps drop in BF3 - Page 2

post #11 of 41
There a problem if you cant maintain 50 FPS on one screen... Like Aeroz tell you install MSI Afterburn see if both GPU load at 99%

Are you using any AA ? I dont use it because with 5760X1080 its too much to use it but if I remember I read somewhere ATI user should NOT use deffered AA but the post AA if needed ( I run post AA without any fps loss).

Like I told you in our private msg , dont expect too much from xfire 6950 at 5760X1080 its barely runing eyefinity in BF3 with some ingame setting a bit lower.. Shadow and Mesh take a lot of power so you will need to reduce them, no occlusion, no motion blur.

Also remember to use Driversweeper between driver change to have a clean driver install every time.
    
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post #12 of 41
Thread Starter 
Installed the 12.1a drivers after using Driver Sweeper, then ran afterburner and it appears that in game with crossfire enabled I'm getting 97% usage off of GPU2 and 0% usage of GPU1, this seems wrong on so many levels. What can I do to get this running smoothly before my thid monitor comes in?
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post #13 of 41
Sounds like you don't have crossfire enabled in the driver settings.

I haven't used ATI drivers in awhile so I can't tell you exactly where the settings are, but dig around and make sure you have it enabled.

0% means it's not being used whatsoever.
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post #14 of 41
Quote:
Originally Posted by HOTDOGS View Post

Installed the 12.1a drivers after using Driver Sweeper, then ran afterburner and it appears that in game with crossfire enabled I'm getting 97% usage off of GPU2 and 0% usage of GPU1, this seems wrong on so many levels. What can I do to get this running smoothly before my thid monitor comes in?

You sure crossfire is enabled? You can confirm this in CCC

Edit - and btw, if you plan to use MSI AB you should disable ULPS
Edited by EyesDilated - 6/13/12 at 2:01pm
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post #15 of 41
Thread Starter 
Yes, I'll snoop around when I'm back from dinner. But I tried the enableupls thing and noticed my GPU1 is getting 0-2% usage this time and GPU2 is pushing 99%.
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post #16 of 41
I was under the impression 2 gig 6950's couldn't be unlocked, and that it was only ref models.
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post #17 of 41
Thread Starter 
These are definitely unlocked. But that gives me an idea, I will switch them back to 6950s and see how they scale.

I did notice a problem however, on one of my 6950s under GPU-Z it is showing only 1 gig of memory instead of 2? Why could this be?

Edit: Is there a problem with running a 2GB and 1GB card in Crossfire? I thought I paid for a 2GB card like the auction said, but it turns out this was a 1GB card so I'm filing a claim to try and get a 2GB one.
Edited by HOTDOGS - 6/13/12 at 2:49pm
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post #18 of 41
To enable crossfire they are 3 thing to do

1- make sure when you install the drivers that BOTH card are present, if they are CCC will ask you if you want to enable Xfire right after the install at the first opening.

2. You can go in CCC to " performance" and AMD crossfirex , and make sure its enable.

3. xfire only work in FULLSCREEN so make sure the game you play are in fullscreen and not some kind of windows without border. Try switch between windows and fullscreen a couple time if the game was already on fullscreen.
    
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post #19 of 41
Quote:
Originally Posted by Goharder View Post

I was under the impression 2 gig 6950's couldn't be unlocked, and that it was only ref models.

nah its false , many no ref 6950 2 gb unlock.. some like my saphire easy as fliping the small switch and VOILA, other need some bios mod and finally few really dont unlock.
    
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post #20 of 41
Thread Starter 
I'll try a few more things, but right now I'm trying to get my money back for this card. I spent money for what I thought was a 2GB card only to receive a 1GB card, I am so livid right now. This is putting all of my plans on backfire, it seems to be one thing after another.

Edit: Could this be caused by the 2GB running to match the speeds of the 1GB? It must be since they seem to run at different clock speeds as well. I'll have to obtain a matching card and see if that solves my problems.
Edited by HOTDOGS - 6/13/12 at 3:26pm
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