What is the most profitable ASIC miner to buy?
Choosing the right ASIC miner comes down to three numbers: hashrate, power efficiency (J/TH) and your local electricity cost. In this guide we break down how to compare Bitcoin miners like the Bitmain Antminer S21 and MicroBT Whatsminer series, and when hydro or immersion cooling is worth it.
Hashrate vs. efficiency
A higher hashrate mines more, but efficiency decides your profit. Modern SHA-256 miners deliver 200+ TH/s at under 20 J/TH. Always compare the watts-per-terahash, not just the sticker hashrate.
Air, hydro or immersion?
Air-cooled miners are simplest for home use. Hydro and immersion rigs run cooler, quieter and denser — ideal for serious farms. Browse our hydro cooling miners to compare.
Buy from a trusted source
Only buy brand-new ASIC miners from a verified store with real support and insured shipping. See our fraud prevention guide, then shop all miners.