I just migrated a 6800 Ultra OC to a completely new mobo and XP installation. I don't seem to have any problems with 3D, but whenever I play video files I get horizontal chop, it's really bad. The only thing I could have imagined doing wrong to this card was using it with a 380 watt PSU (which was what it was on before migrating it to my 500 watt PSU, the minimum being 480) but it was never used for heavy graphics processing, only web browsing and such. Does this mean my card is "fried" somehow or what? o.o Please help meh, $500 down the drain is not very good. ;-;