Antminer S21 Hydro vs MicroBT WhatsMiner M70
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Hydro | Specification | MicroBT WhatsMiner M70 |
|---|---|---|
| 335.0 TH/s | Hashrate | 236.0 TH/s |
| 5,360 W | Power Consumption | 3,422 W |
| 16.0 J/TH | Efficiency | 14.5 J/TH |
| 50 dB | Noise Level | 75 dB |
| 15.8 kg | Weight | 13.5 kg |
| 18,288 BTU/hr | BTU Output | 11,676 BTU/hr |
| 44/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S21 Hydro
MicroBT WhatsMiner M70
Based on BTC price of $75,773 and current network difficulty as of Apr 30, 2026. Actual results vary.
Verdict
Both the Antminer S21 Hydro and MicroBT WhatsMiner M70 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
MicroBT WhatsMiner M70$1.17/day higher profit at current rates.
Best for Home Mining
Antminer S21 HydroScore: 44/100. 50 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M7014.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21 Hydro or MicroBT WhatsMiner M70 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M70 is more profitable at $0.08/day compared to $-1.10/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 M70?
The Antminer S21 Hydro is quieter at 50 dB compared to the MicroBT WhatsMiner M70 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 M70?
The Antminer S21 Hydro scores 44/100 on our Home Mining Score (vs 36/100 for the MicroBT WhatsMiner M70). 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 M70?
The Antminer S21 Hydro runs at 16.0 J/TH while the MicroBT WhatsMiner M70 runs at 14.5 J/TH — a difference of 1.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.