MicroBT Whatsminer M21 vs MicroBT WhatsMiner M70S+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT WhatsMiner M70S+ |
|---|---|---|
| 31.0 TH/s | Hashrate | 262.0 TH/s |
| 1,860 W | Power Consumption | 3,275 W |
| 60.0 J/TH | Efficiency | 12.5 J/TH |
| — | Noise Level | 75 dB |
| 7,150.0 kg | Weight | 13.5 kg |
| 6,346 BTU/hr | BTU Output | 11,174 BTU/hr |
| 28/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT WhatsMiner M70S+
Based on BTC price of $79,143 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the MicroBT WhatsMiner M70S+ edges it: 4 of 5 factors go its way (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 745% more hashrate (31.0 vs 262.0 TH/s). That said, the MicroBT Whatsminer M21 isn't beaten everywhere — it still wins power consumption. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the MicroBT Whatsminer M21 and MicroBT WhatsMiner M70S+ actually differ, with the gap quantified:
- MicroBT WhatsMiner M70S+ 745% more hashrate (31.0 vs 262.0 TH/s)
- MicroBT Whatsminer M21 43% better power draw (1,860 vs 3,275 W)
- MicroBT WhatsMiner M70S+ 79% better efficiency (60.0 vs 12.5 J/TH)
- MicroBT WhatsMiner M70S+ 100% better weight (7,150.0 vs 13.5 kg)
- MicroBT WhatsMiner M70S+ 76% more heat output (6,346 vs 11,174 BTU/hr)
- MicroBT WhatsMiner M70S+ 29% more home mining score (28.0 vs 36.0)
Best For...
Best for Profitability
MicroBT WhatsMiner M70S+$5.02/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M70S+Score: 36/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M70S+12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
MicroBT Whatsminer M21 vs MicroBT WhatsMiner M70S+: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M70S+ is more profitable at $1.68/day compared to $-3.33/day for the MicroBT Whatsminer M21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
MicroBT Whatsminer M21 vs MicroBT WhatsMiner M70S+: which runs at a lower noise level?
The MicroBT WhatsMiner M70S+ is quieter at 75 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 MicroBT WhatsMiner M70S+?
The MicroBT WhatsMiner M70S+ scores 36/100 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.
How far apart are the MicroBT Whatsminer M21 and MicroBT WhatsMiner M70S+ on J/TH?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT WhatsMiner M70S+ runs at 12.5 J/TH — a difference of 47.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 79% better efficiency (60.0 vs 12.5 J/TH).