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Antminer S21 Hydro

Antminer S21 Hydro

Hashrate 335.0 TH/s Power 5,360 W Efficiency 16.0 J/TH
VS

MicroBT WhatsMiner M72S

Hashrate 282.0 TH/s Power 3,807 W Efficiency 13.5 J/TH

Antminer S21 Hydro vs MicroBT WhatsMiner M72S

Side-by-side specs, profitability, and home mining comparison.

Specifications Comparison

Antminer S21 Hydro Specification MicroBT WhatsMiner M72S
335.0 TH/s Hashrate 282.0 TH/s
5,360 W Power Consumption 3,807 W
16.0 J/TH Efficiency 13.5 J/TH
50 dB Noise Level 75 dB
15.8 kg Weight 25.5 kg
18,288 BTU/hr BTU Output 12,990 BTU/hr
44/100 Home Mining Score 30/100
— Release Year —
SHA-256 Algorithm SHA-256
Bitmain Manufacturer MicroBT

Profitability Comparison

$/kWh

Antminer S21 Hydro

Daily Revenue 0.00014520 BTC $10.38
Daily Electricity -$12.86
Daily Profit -$2.49
Monthly -$74.61
Yearly -$907.70

MicroBT WhatsMiner M72S

Daily Revenue 0.00012222 BTC $8.74
Daily Electricity -$9.14
Daily Profit -$0.40
Monthly -$12.04
Yearly -$146.51

Based on BTC price of $71,470 and current network difficulty as of Mar 25, 2026. Actual results vary.

Verdict

Both the Antminer S21 Hydro and MicroBT WhatsMiner M72S are closely matched across our scoring factors, with neither holding a decisive advantage. Your choice should depend on your specific priorities — review the specs and profitability analysis above.

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Antminer S21 Hydro

Score: 44/100. 50 dB noise level.

Best for Efficiency

MicroBT WhatsMiner M72S

13.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Antminer S21 Hydro or MicroBT WhatsMiner M72S more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M72S is more profitable at $-0.40/day compared to $-2.49/day for the Antminer S21 Hydro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Antminer S21 Hydro or MicroBT WhatsMiner M72S?

The Antminer S21 Hydro is quieter at 50 dB compared to the MicroBT WhatsMiner M72S at 75 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Antminer S21 Hydro or MicroBT WhatsMiner M72S?

The Antminer S21 Hydro scores 44/100 on our Home Mining Score (vs 30/100 for the MicroBT WhatsMiner M72S). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

What is the efficiency difference between Antminer S21 Hydro and MicroBT WhatsMiner M72S?

The Antminer S21 Hydro runs at 16.0 J/TH while the MicroBT WhatsMiner M72S runs at 13.5 J/TH — a difference of 2.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

Compare Antminer S21 Hydro with...

Compare MicroBT WhatsMiner M72S with...

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