Using a computer with a fast graphics processing unit (GPU) to mine cryptocurrency. Many cryptos can be mined with a GPU. Bitcoin could never be mined with GPUs, but prior to the switch to proof-of-stake (PoS) in 2022, Ethereum's puzzle was routinely solved with regular computers and GPU cards. However, there are many cryptocurrencies that can be mined with GPUs, and WhatToMine.com provides extensive detail about them. See
Ethash,
GPU mining rig and
crypto mining.