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7970 crossfire artifacts and other stuff

S

Shocked

Limp Gawd
Joined
Nov 1, 2009
Messages
373
GPU1: XFX 7970 925/1375 1050mv
GPU2: MSI 7970 1010/1375 1112mv

Both reference cooler

I've used both these cards separately just fine. I used them in crossfire fine for a few weeks. The other day I tried a small overclock (bumped the core on the XFX to match the MSI and raised the memory by 100). Seemed fine in games and Uningine for several days, until I started playing a new game, at which point it started doing the "display driver not responding" drill.

At some point after that I noticed GPU-Z wasn't reporting a lot of sensor data on the MSI. Reset everything to stock clocks. Reinstall AMD drivers, no effect. Uninstalled Afterburner, uninstalled AMD drivers, used Driver Cleaner, reinstalled AMD drivers, then after booting the second time after launching GPU-Z the data showed up again like normal.

Then I noticed, even though crossfire was enabled, the MSI wasn't being utilized for anything (0% load, 2D clocks, 35C temp). A little while into gaming, started having artifacting all over the place. Disabled crossfire and everything's fine until I re-enable it.

I need to test the MSI by itself again. But is there any chance this is just a software issue? I haven't touched the voltages, temps have been fine except for one short gaming session where temps got up to about 87C because I forgot to re-enable custom fan profile (stick two of these things in a case and it's like a furnace :( ).
 
Isn't it kind of a weird coincidence that it started happening when the second card stopped working in crossfire, though?

I noticed something else - I've since done another clean driver install, and replaced the crossfire bridge so I don't know if something's changed or I just didn't notice it before. But it seems, in general, when I launch a 3D program the second card will work under crossfire just fine until I minimize to check its temps and clocks - then I go back to game and it never does any more work after that.

EDIT: Well, that theory seems to work in some cases... other times the second card just goes back to 3D clocks just fine.
 
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Test the MSI card on its own to see if you get any more artifacting.

GPU-Z has a log to file option that you can use to check the clocks after playing and there is a log viewer floating around it you goole for it.

If you have no issues, then it's problem solved.
 
If the MSI on its own has no issues then it's a crossfire-specific problem, right?

The artifacting seems to have stopped, in a couple hours of testing it today. The biggest issue at the moment is that crossfire is only working sporadically. :confused:

Civ 5 and 3DMark11 crossfire seems to work fine. Uningine Valley it works until I minimize it and go back to it, and Fallen Enchantress: Legendary Heroes the second card never does any work to begin with (I wonder if it's really running in full screen windowed mode?). FE:LH is when the artifacting initially began, though.
 
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