I just got a Gigabyte 7950 and tried to run MSI Kombuster Furry and Tessy Test (GL4) at 2560x1440 (native) resolution (AA: Off) and when it first boots up I see 2-3 artifacting episodes and then it runs fine for the rest of the test (currently on 10 min of second run).
I am at stock speeds - 900MHz core, 1250MHz mem, VDDC: 1.090V
It holds at a steady 53*C and never hotter.
Any ideas? Did I get a bad card - what other tests can I run to confirm?
EDIT: Forgot to mention I had previously a GTX580 in this computer - recently died and I put the 7950 in without connecting the pc to the internet and I uninstalled all NVIDIA drivers, then installed drivers for 7950.
Do you think I should reinstall windows? I don't want to but will if you think it will help.