Hi, I upgraded to a built-by-ATI 9800 Pro a couple days ago, since I was getting artifacting with my 9600XT. I'm still getting artifacting though. With ATITool I scanned for artifacts at stock speeds for three hours last night; ran flawlessly. Then I used Find Max Core and Max Mem to overclock it. The default speeds are 380/340, and I reached 410/350 with stock cooling. Artifact scanning detected no errors for half an hour at those clocks. But when I go into a game, I start getting artifacting immediately. My GPU and CPU temps are still low right after I get into the game, so I doubt its either of those overheating. I can't get a picture of it though because they only appear for a slight instant, and I don't have quick enough reflexes to press the PrntScrn button before they disappear. I've tried just pressing the button over and over till eventually one appears in a screenshot, but that hasn't worked either. They must be appearing for only a few milliseconds. They aren't horrible, game-ruining artifacts, they they're definitely noticable. Brownish rectangles running the vertical length of the screen, or bluish lines running horizontally. I'm not sure what the problem could be. I've used Memtest86+ to check my RAM for errors, but both modules checked out fine.