Over the past few days I've flashed so many variations of 4850 BIOSs (no pencil modding, etc.) that my eyes almost started to bleed. I've taken the voltage up to 1.2, core from 625-720 and memory from 993-1050. As I ratchet up the numbers I also increase the cooling. Regardless of what I tried I simply could not get EITHER one of my two VisionTek 4850s to pass every test completely artifact free!

For instance... in 3DMark Vantage (Extreme mode) during the first test if I watch extremely closely I will notice a single artifact (looks like a 1/2" square that flashes once for a second in the middle of my screen) during the part where the girl jumps into the boat and drives it out from under the camouflage cover. This happens even on stock settings. Am I just being too anal here?