Ok as title says. I got some wierd artifacts , using HD 6850 , using latest drivers, i think those are 13.4 , could be driver issues? Tested the GPU in 3D game and furmark..same thing. Only in 3D i get those wierd artifcats , like black/grey squares. Thank you guys! I will post screenshots too.
1 screen in game http://i41.tinypic.com/2j5l73l.jpg
1 furmark screenshot http://i44.tinypic.com/ae47ee.jpg