Unfortunately I also have a bad experience with the Sapphire RX480 8 GB Nitro models. Out of 24 of those cards, 4 pieces died for me. I maintained them regularly, blew them with a compressor, put the best thermal paste "Thermal grizzly kryonaut", I have a very high quality and reliable power supply. I am very disappointed. So I went back to MSI again. Now I only use the MSI 5700XT Gaming-X series graphics cards . I used to have several MSI 7950 Twin Frozr IIIs and have been mining with them for years. None of them ever died. Fans did go, but graphics cards never did.