MSI Twin Frozer Radeon R9 290 4GB GDDR5 Hynix
Second hand condition, 3-4 years old (I think).
Used it to mine for a few months.
One of the two fans does not spin up. If you give it a push it starts.
The card was throttling to stop from overheating (94'C). I also saw some artifacts (see picture) when playing games.
I added Cooler Master X1 thermal paste to the core. Which resulted in much better temperatures (60-70'C) under load.
But it seems like it was too late. The artifacts got worse and the card was not identified by GPU-Z consistently.
My PC now boots up with the card installed, but when it enters the Desktop the screen gets completely black and is covered with red lines, which renders is unusable. The internetz says it is due to failing VRAM.
I am selling this as-is, for parts, a doorstop or if you think you can fix it.