MicroBT Whatsminer M20S vs MicroBT Whatsminer M31S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M20S | Specification | MicroBT Whatsminer M31S |
|---|---|---|
| 68.0 TH/s | Taux de hachage | 76.0 TH/s |
| 3,360 W | Consommation électrique | 3,220 W |
| 49.4 J/TH | Efficiency | 42.4 J/TH |
| — | Niveau de bruit | — |
| 12.5 kg | Weight | 12.5 kg |
| 11,464 BTU/hr | BTU Output | 10,987 BTU/hr |
| 22/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M20S
MicroBT Whatsminer M31S
Based on BTC price of $64,340 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT Whatsminer M31S comes out ahead — it takes 3 of 4 (efficacité, hashrate, consommation électrique). Its biggest concrete edge: 14% better efficacité (49.4 vs 42.4 J/TH). That said, the MicroBT Whatsminer M20S isn't beaten everywhere — it still wins rapport qualité-prix. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the MicroBT Whatsminer M20S and MicroBT Whatsminer M31S sit on each measurable spec:
- MicroBT Whatsminer M31S 12% more hashrate (68.0 vs 76.0 TH/s)
- MicroBT Whatsminer M31S 4% better power draw (3,360 vs 3,220 W)
- MicroBT Whatsminer M31S 14% better efficacité (49.4 vs 42.4 J/TH)
- MicroBT Whatsminer M20S 4% more heat output (11,464 vs 10,987 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| MicroBT Whatsminer M20S | Metric | MicroBT Whatsminer M31S |
|---|---|---|
| $66 | Upfront cost (MSRP) | $91 |
| -$6.08 | Daily net profit | -$5.52 |
| -$2,287 | Net after 1 year | -$2,104 |
| -$4,508 | Net after 2 years | -$4,118 |
| -$6,729 | Net after 3 years | -$6,131 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
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
Which makes more money, the MicroBT Whatsminer M20S or the MicroBT Whatsminer M31S?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M31S is more profitable at $-5.52/day compared to $-6.08/day for the MicroBT Whatsminer M20S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the MicroBT Whatsminer M20S or the MicroBT Whatsminer M31S better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the MicroBT Whatsminer M20S or the 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 M20S and MicroBT Whatsminer M31S?
The MicroBT Whatsminer M20S runs at 49.4 J/TH while the MicroBT Whatsminer M31S runs at 42.4 J/TH — a difference of 7.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 14% better efficacité (49.4 vs 42.4 J/TH).