ASIC

An ASIC (application-specific integrated circuit) is a chip designed to do one job extremely efficiently. In crypto, ASICs are machines built specifically to mine a particular proof-of-work coin.

How it works

Where a general-purpose CPU or GPU can run any program, an ASIC is hard-wired for a single hashing algorithm. That focus makes it vastly faster and more power-efficient at that one calculation, but useless for anything else. Miners run large fleets of ASICs — often in warehouses with heavy cooling, because the machines draw a lot of power and generate significant heat and noise — to compete for block rewards on the network they target.

Why it matters

ASICs make mining far more competitive and capital-intensive, pushing it toward large, specialised operations and away from hobbyists. Because that can concentrate mining power, some newer networks deliberately choose “ASIC-resistant” algorithms to keep mining accessible to ordinary hardware and more decentralized.

Example

Bitcoin mining today is dominated by purpose-built ASIC machines rather than home computers.