- Will all those cards go to mine shitty coins? well, that will destroy the actual profitability of any of them (if there is still any). Yes, it's possible that many many people will sell their GPU's and not all of them will enter the pools, but anyway, that's a guess. What it's not a guess but a certain thing to happen is that once ETH goes PoS all shitty coins will turn to not profitable due to difficulty increase.