Crossfire Issues

[ChrisGOne]

I recently picked up 2 Radeon 6870s and have had intermittent problems with them in Crossfire; I'd appreciate any suggestions anyone has or similar experiences.

Specifically, when Crossfire is enabled, I get a flickering orange colouration on the screen; sometimes bands like texture tearing, and sometimes more solid. I've tried running each card individually and swapping them across PCI-E slots, and they seem to be fine, running DX11 titles and benches without any issues. When Crossfire is enabled, however, I get the problem described. Somehow, it went away for several days and I initially thought it was a bad HDMI cable, of all things - swapping the cable seemed to fix it. However it's back, and I'm on the verge of a reformat to see if that will cure it - since the cards are OK individually, and it did go away, I reckon it could be software.

Specs :

i5 2500K (problem is at both stock and overclocked)
8gb DDR3-1600
Crucial M4 128GB
2x Sapphire Radeon 6870s (I've tried older drivers too)
Akasa 850W SLi/Crossfire certified PSU.
Win7 up to date.
Monitor is a Samsung LE37B550A 37" LCD TV (1080p)

Happy to post other info if needed

 

[MeMeMeMe]

Do you have the crossfire bridge attached? And if so, do you have a second you can test?

 

[ChrisGOne]

Yes, I do (tried flipping it around as well !). I don't have a second, but since they're cheap, I might try to pick up another one tomorrow.

Has anyone ever encountered anything similar ? Other thoughts ?

 

[ChrisGOne]

Seem to have resolved this by using a DVI>HDMI adapter. Must be an issue with the HDMI-out in some way.

 

[MeMeMeMe]

weird. At least its sorted.