Glossary

ASIC

Plain-language definition Crypto glossary

Key takeaways

An ASIC (application-specific integrated circuit) is a chip designed to do one job extremely efficiently, and in crypto ASICs are machines built specifically to mine a particular proof-of-work coin.
Unlike a general-purpose CPU or GPU, an ASIC is hard-wired for a single hashing algorithm, making it vastly faster and more power-efficient at that one calculation but useless for anything else.
ASICs make mining far more competitive and capital-intensive, pushing it toward large specialised operations, which is why some newer networks deliberately choose ASIC-resistant algorithms.

Definition

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.

FAQ

Frequently asked questions

How is an ASIC different from a GPU for mining?

A GPU is general-purpose and can run many different programs, while an ASIC is hard-wired for a single hashing algorithm. That focus makes an ASIC vastly faster and more power-efficient at its target calculation, but useless for any other task. The trade-off is flexibility versus raw efficiency.

Why are some networks designed to be ASIC-resistant?

ASICs concentrate mining power in the hands of large, well-funded operations, which can reduce decentralization. To counter this, some newer networks deliberately choose ASIC-resistant algorithms so that ordinary CPUs or GPUs remain competitive. The goal is to keep mining more accessible to a broader range of participants.

Can I mine profitably without an ASIC?

On established proof-of-work coins where ASICs dominate, competing with general-purpose hardware is very difficult because ASICs are far more efficient. On ASIC-resistant networks, CPUs or GPUs can still be competitive. Profitability also depends on electricity costs and coin prices, so this is a practical consideration rather than financial advice.