what would cause this?

wick05401

Distinguished
May 2, 2006
3
0
18,510
dod_kalt0000.jpg


card is running cool so its not a heat issue ,any ideas?
 
Are the artefacts only in the sky? If so I wouldn't worry too much...
 
ok this is on a xfx 7900 gt, most of the time it only happens in the sky but sometimes i get them on the ground, 1280x1024 everything on high, 16xAF 4xAA hdr on.