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Problems with XFX 6870 Crossfire

post #1 of 8
Thread Starter 
Well I have been having ongoing problems with my dual XFX 6870s in a crossfire situation that I can't seem to figure out how to fix. Sometimes, at completely random times, the fans of my graphics cards turn all the way up to 100% and then shortly after my computer screen goes black.

At first I assumed it was the drivers, so I uninstalled + driver sweeped my drivers and then downloaded ccc 10. This worked for about a week then the problem started happening again. I moved back to ccc 11 and again it continued to happen.

After I realized that uninstalling/reinstalling the drivers wasn't going to work I decided to try flashing the card bios's. So I individually flashed each card's bios to some Asus BIOS which didn't seem to help very much at all.

At this point I realized that I had no other choice but to reinstall windows. So I backed up my data, formatted all of my disks, and reinstalled windows on a different hard drive. This worked very well for the past ~2 weeks. Today for the first time I turned on Crossfire and began reinstalling all of my games and about an hour ago the fans again went up to 100% and black screened.

Individually, each card works fine. I have used both cards and neither seem to have any issues working individually, however once I turn on crossfire a crash is imminent. I also have changed crossfire bridges. One other side effect I noticed is that on my non primary card catalyst control center is never able to tell me the current fan speed or temperature. The fan speed stays at 20% no matter what I do and the temperature stays at 0 degrees.

Is there anyone who has had a similar problem that would be able to help me out or help me to discover my problem? Any assistance would be very much appreciated in this extremely frustrating matter.

Edit: Now suddenly catalyst control center doesn't even recognize the other card. It thinks that I am only using one card for some reason. This is growing increasingly frustrating.
Edited by Airolden - 4/24/11 at 9:02am
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post #2 of 8
Suggest you put the 6870's back to sock bios/settings and start from there.
post #3 of 8
OP,

Did you install crossfire profiles or just a latest driver?

http://sites.amd.com/us/game/downloa...n_win7-64.aspx


ATI Catalyst Application Profiles

0.5 MB

11.3 CAP3

4/15/2011






Description:

This release of ATI Catalyst™ delivers support for the latest ATI CrossFireX™ profiles in a separate executable file ensuring users have access to the absolute latest set of profiles installed on their PC.



You must reboot your system after the CAP has been installed for it to take effect.



New profiles added to this release:

- Red Faction 4 – Improves CrossFire performance

- Crysis 2 – Improves CrossFire performance and resolves flickering issues
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post #4 of 8
Thread Starter 
Quote:
Originally Posted by dihartnell View Post
Suggest you put the 6870's back to sock bios/settings and start from there.
I may do that, though I had these problems when they were at default so I doubt it will make any difference. It probably is a good place to start though I suppose.

Quote:
Originally Posted by krazyatom View Post
OP,

Did you install crossfire profiles or just a latest driver?

http://sites.amd.com/us/game/downloa...n_win7-64.aspx


ATI Catalyst Application Profiles

0.5 MB

11.3 CAP3

4/15/2011






Description:

This release of ATI Catalystâ„¢ delivers support for the latest ATI CrossFireXâ„¢ profiles in a separate executable file ensuring users have access to the absolute latest set of profiles installed on their PC.



You must reboot your system after the CAP has been installed for it to take effect.



New profiles added to this release:

- Red Faction 4 – Improves CrossFire performance

- Crysis 2 – Improves CrossFire performance and resolves flickering issues
Yes I have tried that before but to no avail. I still had the same issues.
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post #5 of 8
Thread Starter 
It is getting even worse. Sometimes it does it immediately after turning on my computer and it takes several attempts to finally get my computer on. Catalyst Control Center only identifies one card so I am not able to disable/enable crossfire. Any ideas?
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post #6 of 8
Thread Starter 
bump....

Also, while messing around with graphics card configurations I may have discovered the real root to all of these issues.

Whenever I have the graphics card not in the first PCI-E slot, the card will not always display anything. It took me several restarts to get something to display and on one of the restarts even though I only had one card in, the card's fan went up to 100%. It is now working fine for now in the third slot, but I am unsure how long this will last. So this led me to believe that the real problem was not in the fact that I am using multiple cards but in the fact that I have a card in another PCI-E slot.

I experienced the same problems with both cards in both the second and third PCI-E slots. I am unable to fit the card in the fourth PCI-E slot otherwise I would test that also.

So is it likely a problem with my motherboard? Or is it a problem with the way my power supply is giving the other PCI-E slots power? Thank you in advance for your assistance.
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post #7 of 8
did you ever get it to work? Thinkin about getting these cards...
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by KrunchatizeMeKapn View Post
did you ever get it to work? Thinkin about getting these cards...
Well I sent in my motherboard to Gigabyte, they claimed to have repaired it, but I decided to sell my motherboard in preparation for bulldozer so I never got a chance to actually test it.

I have to say I had a bad experience with them, but it may have just been my motherboard and I'll be using them in my new motherboard so I hope that they work as they are supposed to.

Don't hesitate to buy them because of my bad experience, however. I know a lot of people are very happy with owning these cards, and if you don't have any problems (which most people probably don't) then these things will easily outperform any single GPU card on the market for much cheaper.

Despite my experience, I would still recommend the cards because they have such a good price / performance ratio that I feel like they are worth a shot.

Up to you in the end though, and I hope you make a decision that you're happy with.
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