I know there is a lot of topics like that and i am reluctant to make another one. I have been however searching for information and trying different things for a few days now and would need some help. A week ago I bought a new pc with following spec: CPU: Intel Core i7 3770 3,4GHz GPU: Asus GTX 680 DC2O - 2GD5 RAM: 16GB 1866MHz CL9 Corsair Ballistix Elite MOBO: GigaByte Z77x-UD5H Power supply: Cooler Master GX 750W Gamer Extreme The thing runs fine except for distorted, oversized polygons I get in few games and benchmarks. Here is the video of a problem, shot in Heaven Benchmark 4.0: http://www.youtube.com/watch?v=E2-_EpKV2Yg I have suspected VRAM right away and so ran the MemtestG80 and MemtestCL. I ran them both for several hours without an error! I have also ran the folowing tests without an error: 3DMark03, MSI Afterburner - Kombustor, ATITools artifact tool, OCCT artifact finder. The games in which I encountered theese artifacts were Battlefield 3, Bioshock infinity and only small occurences in Guild Wars 2 and Eve Online. The best way to reproduce them tho, is running Heaven Benchmark 4.0 for about 10 minutes on ultra settings, 1080p. I have tried different drivers: 314.22, 314.21 and 314.14 with which the movie was also shot and the results were all the same. I have first suspected its the temperature, although it never goes above 60-62°C. I have tried speeding the fans manualy and lowering the temp to about 50 but that did not remove artifacts, which only went away when the game/benchmark was restarted. I have also tried lowering the memory/gpu clock by about 100-150, but that didnt remove the artifacts either. I am at a complete loss what to do here and am willing to try anything. The reason i didnt yet go for RMA is because I dont want to be without the use of my PC for several weeks, especially if there is a possibility there is something wrong I could fix myself. I also dont have easy access to a computer that would be able to support this GPU properly, although I know information from it would be useful. Thanks for any help in advance!