Presently, Bitcoin mining hardware has developed dramatically, since 2009. At the beginning, miners used to use their central processing unit (CPU) to mine bitcoins, but this wasn’t fast enough and it was slowing-down the system resources of the miner’s computer.
Then, miners quickly moved on to using the advanced graphical processing unit (GPU), which is in computer graphics cards. Because it was able to hash data 50 to 100 times more faster, and was consuming much less power per unit of work.
During the middle of 2011, a new industry came up with custom ming equipment, which pushed the performance standards even higher than before. These specialized mining devices were easy to use, and were based on field-programmable gate array (FPGA) processors, and attached to computers using a simple USB connection.
The Field-programmable gate array (FPGA) miners used much less power than the CPUs or GPUs and made concentrated mining farms possible and effective for the first time. Find the best bitcoin mining hardware for the miners, compared here.