Antminer S21 Hydro vs Whatsminer M56
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Hydro | Specification | Whatsminer M56 |
|---|---|---|
| 335.0 TH/s | Hashrate | 194.0 TH/s |
| 5,360 W | Power Consumption | 5,550 W |
| 16.0 J/TH | Efficiency | 28.6 J/TH |
| 50 dB | Noise Level | 50 dB |
| 15.8 kg | Weight | 13.0 kg |
| 18,288 BTU/hr | BTU Output | 18,937 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Antminer S21 Hydro
Whatsminer M56
Based on BTC price of $77,622 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Hydro wins on 3 of 4 factors (efficiency, hashrate, power consumption). The Whatsminer M56 holds the edge in price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Antminer S21 Hydro16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21 Hydro or Whatsminer M56 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Hydro is more profitable at $-0.81/day compared to $-6.34/day for the Whatsminer M56. 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 Whatsminer M56?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer S21 Hydro or Whatsminer M56?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Antminer S21 Hydro and Whatsminer M56?
The Antminer S21 Hydro runs at 16.0 J/TH while the Whatsminer M56 runs at 28.6 J/TH — a difference of 12.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.