MicroBT Whatsminer M21 vs MicroBT Whatsminer M3X
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT Whatsminer M3X |
|---|---|---|
| 31.0 TH/s | Hashrate | 12.5 TH/s |
| 1,860 W | Power Consumption | 2,050 W |
| 60.0 J/TH | Efficiency | 164.0 J/TH |
| — | Noise Level | — |
| 7,150.0 kg | Weight | 7,500.0 kg |
| 6,346 BTU/hr | BTU Output | 6,995 BTU/hr |
| 28/100 | Home Mining Score | 26/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT Whatsminer M3X
Based on BTC price of $74,306 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Based on specs, the MicroBT Whatsminer M21 offers 63% better efficiency at 60.0 J/TH compared to the MicroBT Whatsminer M3X at 164.0 J/TH. This directly impacts daily operating costs and long-term profitability.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
MicroBT Whatsminer M21Score: 28/100. 0 dB noise level.
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 M3X more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M21 is more profitable at $-3.47/day compared to $-4.52/day for the MicroBT Whatsminer M3X. 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 M3X?
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 M3X?
The MicroBT Whatsminer M21 scores 28/100 on our Home Mining Score (vs 26/100 for the MicroBT Whatsminer M3X). 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 MicroBT Whatsminer M21 and MicroBT Whatsminer M3X?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT Whatsminer M3X runs at 164.0 J/TH — a difference of 104.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.