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6970 Extremely low performance!

post #1 of 47
Thread Starter 
Ive just got a pair of 2 6970's, upgraded from a 580. So far I am testing each card tried both of them and got the same score in 3Dmark 11

Here are the results:

http://3dmark.com/3dm11/1983115?show...tjlhhcabJOgWug

What is the issue?!

Thanks.

PS: Used driver cleaner to remove the old nvidia drivers, I am going to remove ATI drivers and re install hope that will help.

Any help is greatly appreciated thanks.
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post #2 of 47
Cpu bottleneck a Amd Chip is not good enough to run Cf 6970 at 100%
post #3 of 47
Try reinstalling, yeah. If that doesn't work, remove 1 card, install drivers, then install the 2nd card.

Also, do both cards show up in CCC? Did you get the "congratulations for getting crossfire" blurb?

Did you connect the bridge?
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post #4 of 47
Quote:
Originally Posted by fluxlite View Post
Try reinstalling, yeah. If that doesn't work, remove 1 card, install drivers, then install the 2nd card.

Also, do both cards show up in CCC? Did you get the "congratulations for getting crossfire" blurb?

Did you connect the bridge?
I have to admit I once plugged in the second card and forgot to put the bridge on. Not one of my prouder moments!


Here's what i got with my 6970 quite some time ago...

http://3dmark.com/3dm11/962681
Edited by Foolsmasher - 10/11/11 at 2:45pm
post #5 of 47
Did u have Cf turn on?
post #6 of 47
use BOTH bridges.

Make sure your motherbourd is atleast 8x 8x PCIE 2.0 capable.
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post #7 of 47
Thread Starter 
By saying "tried both of them" I meant that I took one out and put the second one in its place, I haven't even tried testing crossfire setup.

There is no cpu bottleneck since I got much higher score both from the gtx 580 and my old 5870.

Look at the graphics score: 3264 it should be around 4500
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post #8 of 47
Crossfire is disabled, that's for sure. Still, you should be getting a way high graphics score. It's barely half of what my 6950s get in single-card mode.
Make sure there's no background programs hogging your CPU, performance in 3DMark11 will tank unless your processor is dedicated to the task at hand. Even running folding@home on idle priority reduced my scores with 2600k by at least 30%

EDIT:
Make sure your card receives enough power.
Edited by Arni90 - 10/11/11 at 2:51pm
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post #9 of 47
Yeah 3dmark def shows you only using 1 card, but still regardless your scores are really really low. Try resetting everything back to stock settings and running 3dmark 11, might just be faulty hardware and you might have to return it.
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post #10 of 47
USE TWO BRIDGES....

And download GPUZ and see at what X16 , X8 , X4 , X2 your PCIE is running at!!!
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