How To Tell It If Used GPU comes from MINING RIG ⛏️⛏️⛏️

You don't want to have a video card that came from a mining rig because the thing may have much of it's life already behind it. Mining rigs can wear down hardware with heavy constant use and when they get sold, you don't always sell the best.
In a typical PC, a GPU’s fans might only see action for a few hours a day, and that’s even more true for GPU models that don’t allow the fans to spin until a certain temperature is reached (usually around 50 C). While malfunctioning GPU fans aren’t exactly uncommon, it’s extremely rare that GPU fans become totally broken. It normally takes years for the fans to fail on a GPU that’s just used for normal desktop stuff like web browsing, gaming, and work.