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4850X2 crossfire issues

post #1 of 6
Thread Starter 
A month ago I got back this card from RMA. Initially it was having some serious issues which got resolved.

I played BC2 for approximately 10 days with crossfire on. The card didnt see much gaming for another 12-13 days. A few days back I started gaming on it again and installed Just Cause 2.

Now here's the problem :

About 10 minitues into the game with crossfire on, the whole system would freeze up. Everything would be working excellently before the sudden freeze.
Furmark freezes at about 3 minitues when the temp. of both gpus reaches ~80C.

With crossfire off, everything works OK. I tried Just Cause 2 and furmark with gpu 1 and gpu 2 (crossfire disabled) and both worked fine.

However, I can play BC2 for hours with crossfire on and all the settings ramped up without a crash or anything. The gpu load stays 90-99% and temperatures reach upto 72C or so.

I don't know if its related but, I also experience sudden freeze ups while playing Burnout Paradise, the game freezes for like 20 seconds and then resumes.
Edited by lurkingdevil - 1/21/11 at 5:29am
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post #2 of 6
I'd try to RMA it again. Maybe they'll send you one of their directx 11 cards.
post #3 of 6
Yeah try to RMA, should not be happening tbh.
    
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post #4 of 6
Are Both your 4850s the same model exactly, like both HIS and Both double slot size, same cooler exactly.
If that is all correct are you over clocking your GPUs and if so back the Oc off a bit or go to stock and check it again, as you may have a weak GPU or one card cooling way better than the other.
Mine are Gigabyte single slot 1Gig 4850 cards and they are naturally hot cards, had to add 1 more case fan to cool the top card better and a bigger Northbridge cooler as it sits right above the top card.
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by Doom View Post
Are Both your 4850s the same model exactly, like both HIS and Both double slot size, same cooler exactly.
If that is all correct are you over clocking your GPUs and if so back the Oc off a bit or go to stock and check it again, as you may have a weak GPU or one card cooling way better than the other.
Mine are Gigabyte single slot 1Gig 4850 cards and they are naturally hot cards, had to add 1 more case fan to cool the top card better and a bigger Northbridge cooler as it sits right above the top card.
Its a 4850X2


Two 4850 gpus on one card. In this particular card it is possible to turn crossfire on and off through CCC.

I ran Street Fighter benchmark and it went okay with crossfire. Any other stress testing software you guys recommend?
The thing is that I'm living in asia and I'll most likely have to send the card all the way to USA(or Hong Kong) for RMA. So if the problem persists only for a few games, then I won't send it.
Edited by lurkingdevil - 1/21/11 at 9:39pm
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post #6 of 6
Thread Starter 
I just played Just Cause 2 on crossfire for 2 hours without freeze up!

I think it is a temperature issue. This time I let MSI Afterburner vary the fan speeds, and show the gpu temp in On-Screen Display. It didn't let the temperature go above 71C and the game didn't freeze at all. Then after playing a lot, I set fan speed control back to auto(hardware auto). This time the temperature rose to about 75-77C and the game froze up shortly after.
Also I'm idling at 58C, I think thats a bit high? This is with the side panel removed and the case laid on its side.

The gpu should handle temperatures of upto 90C with no issue, so I don't know why this is happening..

EDIT: There is a significant temperature difference between gpu1 MEMIO and gpu2 MEMIO.
GPU1 MEMIO is approximately 10C highier than GPU2 MEMIO. When the gpu temperature was 72C with fan speed at 55%, MEMIO1 was ~80C while MEMIO2 was ~70C. Could that be the issue?
Edited by lurkingdevil - 1/22/11 at 6:02am
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