ASICs are basically it these days, GPUs and CPUs are only used by hobbyists at this point. The reduced energy requirements of ASICs over GPUs has made it basica

ASICs are basically it these days, GPUs and CPUs are only used by hobbyists at this point. The reduced energy requirements of ASICs over GPUs has made it basically a requirement to use ASICs, as energy costs can't be amortized over the lifetime of the miner (while the fixed cost to buy the miner can).