I had a Sapphire 7850 OC that exhibited momentary artifacts. I returned that 7850 for a refund and used those funds to purchase a GTX 660, which has given me no problems so far. I have not encountered stuttering issues with my GTX 660 (using both 306.97 and 310.33 beta drivers). Apparently, the stuttering issue was resolved in the 306.97 driver release: http://www.nvidia.com/object/win8-win7-winvista-64bit-306.97-whql-driver.html Obviously, that isn't a big help to people who are stuck with the momentary artifact problem. Hopefully it is resolved soon. It's frustrating to see good hardware held back by bad software. I honestly think AMD has the better architecture with GCN (and the wider memory buses). But the Kepler (6xx) series is still a very decent option.