This tag should be used for questions related to mining rigs, CPUs, GPUs, FPGAs, and ASIC miners, as well as the production, and producers of such goods.
Mining cryptocurrencies requires hardware to perform the Proof of Work calculation. These calculations can be done with a general purpose CPU. They can often be done with a GPU in order to obtain a higher hash rate. Some mining algorithms can be programmed into Field Programmable Gate Arrays (FPGAs) and even into hardware circuitry itself for more efficiency and a higher hash rate.