Cool, man. Are you running the Xtreme Burning Mode? Your screen looks different than mine. A quick note: most of my artifacts happen after 45 min (2700 seconds). You might want to run it a little longer. In my experience, when you get past that point artifacts from changes show up a whole lot quicker

Since I started testing my final video OCs with Furmark for at least an hour, I've not had a single GPU OC related crash.