Only thing mining eth are AMD and they are not good for much else maybe xmr if you have a newer card, most of eth hashing power will not move it will get turned off. My few AMD cards will be turned off if not sold soon, 3 years old and paid off many times over.
It was only paid off if you sold at the right time and nothing had gone wrong. The same card that was paid off had another card which broke and then the same card will have to roi for 2 gpus, now imagine if it was 3 gpus that broke, 1 had to pay for 3 or even more, most of the world had no 3 years warranty, most like 15 days warranty hehe, and now officially no warranty at all if gaming gpus were used on mining. Those are things that you trolls fail to see. To me any calculation you trolls do is wrong, most of those gpus used on mining, I'd say 80% of all gpus used on mining were never paid off and to this day are still not and will never be. It's a failed crusade.