There are three key types of mining machines: ASIC miners, GPU miners and FPGA miners.
You can view our PoW Rankings to view a list of proof-of-work coins. Each coin has a mining algorithm and that will determine the most suitable hardware to mine the coin.
ASIC miners are more powerful, stable and are easier to configure in large batches, however they can only mine a single mining algorithm and produce a lot of heat and noise.
GPU miners have more flexiblity mining different algorithms or coins, and produce less noise and use less electricity, however they are not as powerful and require more effort to manage.
FPGA miners are in the middle between ASIC miners and GPU miners, as they are more powerful and expensive than GPUs, yet more flexible than ASICs.
You can research suitable mining machines by viewing our Popular Miners page, and view the relevant machine and performance statistics.