I begin in 2017 with a AMD Radeon™ R9 280, i make in one month what the card cost me, $200 and sell it for $200, after that i buy more than 60 AMD RX580 cards different brands and never stop until today, i fix all the cards when they get broken, buy a lot of memory modules on aliexpress to repair the cards, never have one that fail because mosfets, is weird, i am lucky i guess.