How to choose an ASIC: 7 steps to making the right purchase

An ASIC (ASIC miner) is a device that can do only one thing: compute hashes for a specific algorithm. Therefore, the choice begins not with the model, but with the cryptocurrency.

1. Choose a cryptocurrency and an algorithm

Bitcoin is mined using SHA-256, Litecoin and Dogecoin using Scrypt, and Zcash using Equihash. An ASIC designed for one algorithm is not suitable for another.

2. Look at energy efficiency, not just hash rate

The key metric is how many joules the device consumes per unit of hash rate (e.g., J/TH). The lower the number, the less you pay for electricity to achieve the same result. You can easily compare models on our wiki and on our comparison pages.

3. Calculate your electricity costs

An ASIC runs 24/7. Power consumption × 24 hours × your electricity tariff equals your daily costs. Our profitability calculator shows income, costs and payback period based on current exchange rates.

4. Think about where to place it

Air-cooled ASICs are very noisy and generate a lot of heat. They are hardly suitable for a flat; a separate, ventilated room or placement in a data centre is preferable. Hydro models require a water-cooling circuit.

5. New or second-hand

A second-hand ASIC is cheaper, but check the actual hash rate and the condition of the fans and circuit boards. A new one comes with a manufacturer’s warranty.

6. Warranty and service

Clarify who will repair the device and how long the diagnostics will take.

7. Don’t be swayed by adverts promising a ‘return on investment within a month’

Profitability depends on the coin’s exchange rate and network difficulty, which are constantly changing. Allow for a margin of error.

Need advice? Message a SuperAsic manager on Telegram — we’ll find a model to suit your budget and tariff plan.