So I just sold my old 280x to a friend who is building a new PC. I tested the GPU on my system before I sold it to him, and it was working without issue.
After he put it into his new rig and started playing it worked fine for like a couple of minutes, but then he starts getting weird black artifacts on his screen. It's strange because when he first launches a game it works fine for a while but after some time it starts happening. It can take anywhere from like 2 minutes to 20 minutes to start happening, and sometimes it doesn't happen at all.
Any ideas?