MicroBT Whatsminer M21 vs MicroBT Whatsminer M3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT Whatsminer M3 |
|---|---|---|
| 31.0 TH/s | Hashrate | 12.0 TH/s |
| 1,860 W | Power Consumption | 2,000 W |
| 60.0 J/TH | Efficiency | 166.7 J/TH |
| — | Noise Level | — |
| 7,150.0 kg | Weight | 8,100.0 kg |
| 6,346 BTU/hr | BTU Output | 6,824 BTU/hr |
| 28/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT Whatsminer M3
Based on BTC price of $77,826 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT Whatsminer M21 wins on 3 of 3 factors (efficiency, hashrate, power consumption). Where it pulls away hardest is 64% better efficiency (60.0 vs 166.7 J/TH). The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the MicroBT Whatsminer M21 and MicroBT Whatsminer M3 sit on each measurable spec:
- MicroBT Whatsminer M21 158% more hashrate (31.0 vs 12.0 TH/s)
- MicroBT Whatsminer M21 7% better power draw (1,860 vs 2,000 W)
- MicroBT Whatsminer M21 64% better efficiency (60.0 vs 166.7 J/TH)
- MicroBT Whatsminer M21 12% better weight (7,150 vs 8,100 kg)
- MicroBT Whatsminer M3 8% more heat output (6,346 vs 6,824 BTU/hr)
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 M2160.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M21 or MicroBT Whatsminer M3 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M21 is more profitable at $-3.35/day compared to $-4.37/day for the MicroBT Whatsminer M3. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the MicroBT Whatsminer M21 or MicroBT Whatsminer M3?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the MicroBT Whatsminer M21 or MicroBT Whatsminer M3?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
MicroBT Whatsminer M21 vs MicroBT Whatsminer M3: how much does the efficiency gap matter?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT Whatsminer M3 runs at 166.7 J/TH — a difference of 106.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 64% better efficiency (60.0 vs 166.7 J/TH).