MicroBT Whatsminer M21S vs MicroBT Whatsminer M31S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21S | Specification | MicroBT Whatsminer M31S |
|---|---|---|
| 56.0 TH/s | Hashrate | 76.0 TH/s |
| 3,360 W | Power Consumption | 3,220 W |
| 60.0 J/TH | Efficiency | 42.4 J/TH |
| — | Noise Level | — |
| 12,500.0 kg | Weight | 12,500.0 kg |
| 11,464 BTU/hr | BTU Output | 10,987 BTU/hr |
| 22/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21S
MicroBT Whatsminer M31S
Based on BTC price of $74,054 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT Whatsminer M31S wins on 4 of 4 factors (efficiency, hashrate, power consumption, 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
MicroBT Whatsminer M31S42.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M21S or MicroBT Whatsminer M31S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M31S is more profitable at $-5.29/day compared to $-6.27/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the MicroBT Whatsminer M21S or MicroBT Whatsminer M31S?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the MicroBT Whatsminer M21S or MicroBT Whatsminer M31S?
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 MicroBT Whatsminer M21S and MicroBT Whatsminer M31S?
The MicroBT Whatsminer M21S runs at 60.0 J/TH while the MicroBT Whatsminer M31S runs at 42.4 J/TH — a difference of 17.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.