MicroBT Whatsminer M21 vs MicroBT WhatsMiner M79
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT WhatsMiner M79 |
|---|---|---|
| 31.0 TH/s | Hashrate | 920.0 TH/s |
| 1,860 W | Power Consumption | 13,340 W |
| 60.0 J/TH | Efficiency | 14.5 J/TH |
| — | Noise Level | 50 dB |
| 7,150.0 kg | Weight | 37.0 kg |
| 6,346 BTU/hr | BTU Output | 45,516 BTU/hr |
| 28/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT WhatsMiner M79
Based on BTC price of $79,027 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT WhatsMiner M79, which leads on 4 of 5 weighted factors (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 2868% more hashrate (31.0 vs 920.0 TH/s). That said, the MicroBT Whatsminer M21 isn't beaten everywhere — it still wins power consumption. 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 M79 sit on each measurable spec:
- MicroBT WhatsMiner M79 2868% more hashrate (31.0 vs 920.0 TH/s)
- MicroBT Whatsminer M21 86% better power draw (1,860 vs 13,340 W)
- MicroBT WhatsMiner M79 76% better efficiency (60.0 vs 14.5 J/TH)
- MicroBT WhatsMiner M79 99% better weight (7,150.0 vs 37.0 kg)
- MicroBT WhatsMiner M79 617% more heat output (6,346 vs 45,516 BTU/hr)
- MicroBT WhatsMiner M79 57% more home mining score (28.0 vs 44.0)
Best For...
Best for Profitability
MicroBT WhatsMiner M79$4.78/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M79Score: 44/100. 50 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M7914.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M21 or MicroBT WhatsMiner M79 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M79 is more profitable at $1.44/day compared to $-3.34/day for the MicroBT Whatsminer M21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the MicroBT Whatsminer M21 or the MicroBT WhatsMiner M79 better for noise-sensitive spaces?
The MicroBT WhatsMiner M79 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 MicroBT WhatsMiner M79?
The MicroBT WhatsMiner M79 scores 44/100 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 M79 on J/TH?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT WhatsMiner M79 runs at 14.5 J/TH — a difference of 45.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 76% better efficiency (60.0 vs 14.5 J/TH).