MicroBT Whatsminer M21 vs Whatsminer M30S++ (Hydro)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | Whatsminer M30S++ (Hydro) |
|---|---|---|
| 31.0 TH/s | Hashrate | 112.0 TH/s |
| 1,860 W | Power Consumption | 3,472 W |
| 60.0 J/TH | Efficiency | 31.0 J/TH |
| — | Noise Level | 50 dB |
| 7,150.0 kg | Weight | 12.0 kg |
| 6,346 BTU/hr | BTU Output | 11,847 BTU/hr |
| 28/100 | Home Mining Score | 50/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
Whatsminer M30S++ (Hydro)
Based on BTC price of $73,840 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Whatsminer M30S++ (Hydro) wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The MicroBT Whatsminer M21 holds the edge in power consumption. 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
Whatsminer M30S++ (Hydro)Score: 50/100. 50 dB noise level.
Best for Efficiency
Whatsminer M30S++ (Hydro)31.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M21 or Whatsminer M30S++ (Hydro) 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 $-4.75/day for the Whatsminer M30S++ (Hydro). 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 Whatsminer M30S++ (Hydro)?
The Whatsminer M30S++ (Hydro) is quieter at 50 dB compared to the MicroBT Whatsminer M21 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the MicroBT Whatsminer M21 or Whatsminer M30S++ (Hydro)?
The Whatsminer M30S++ (Hydro) scores 50/100 on our Home Mining Score (vs 28/100 for the MicroBT Whatsminer M21). 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 Whatsminer M30S++ (Hydro)?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the Whatsminer M30S++ (Hydro) runs at 31.0 J/TH — a difference of 29.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.