If you’re using a “trashcan” Mac Pro — one of the new turbine-shaped models released since December 2013 — you should be aware of a new “Repair Extension Program.” MacRumors has the scoop.
Graphics cards in some of the Mac Pros made between February and April 2015 have exhibited problems with distorted video, no video, freezing and other issues.
Because it’s a Repair Extension Program, you’re covered even if you don’t have AppleCare on the Mac Pro.