How efficient is the Antminer S21 Pro?

The Antminer S21 Pro runs at 15 J/TH — joules per terahash is the number that decides mining profitability. The volume workhorse of the current Bitmain generation.

How much power does the Antminer S21 Pro use?

Typical wall draw is 3,510 W, which at a reference $0.10/kWh costs about $8.42 per day in electricity. Scale linearly to your own rate — the electricity price is the whole business.

Is the Antminer S21 Pro suitable for home mining?

Only with acoustic isolation: at ~75 dB it is data-center loud. Home miners use soundboxes, sheds, or pick a quiet unit like the Avalon Mini 3 or Bitaxe.

Bitmain · 2024

Antminer S21 Pro

The volume workhorse of the current Bitmain generation.

Hashrate234 TH/s

Efficiency15 J/TH

Wall power3,510 W

Coolingair

Noise~75 dB

Released2024

Energy $/day @ $0.10/kWh$8.42

The longer story

The S21 Pro is the volume workhorse of Bitmain’s current generation: near-flagship efficiency at fleet-friendly availability, which is why it fills racks at industrial sites worldwide. When miners say “the current Antminer”, this is usually the machine they mean.

It suits farms balancing efficiency against procurement reality. Like all current-gen air-cooled units it is data-center loud — the S21 family shares roughly hair-dryer-at-full-scream acoustics, so home deployment means a shed, a soundbox, or regret.

Manufacturer site

Quick answers

How efficient is the Antminer S21 Pro?: The Antminer S21 Pro runs at 15 J/TH — joules per terahash is the number that decides mining profitability. The volume workhorse of the current Bitmain generation.
How much power does the Antminer S21 Pro use?: Typical wall draw is 3,510 W, which at a reference $0.10/kWh costs about $8.42 per day in electricity. Scale linearly to your own rate — the electricity price is the whole business.
Is the Antminer S21 Pro suitable for home mining?: Only with acoustic isolation: at ~75 dB it is data-center loud. Home miners use soundboxes, sheds, or pick a quiet unit like the Avalon Mini 3 or Bitaxe.

Compare & alternatives

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