MicroBT Whatsminer M21 vs MicroBT WhatsMiner M79S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT WhatsMiner M79S |
|---|---|---|
| 31.0 TH/s | Hashrate | 980.0 TH/s |
| 1,860 W | Power Consumption | 13,230 W |
| 60.0 J/TH | Efficiency | 13.5 J/TH |
| — | Noise Level | 50 dB |
| 7,150.0 kg | Weight | 37.0 kg |
| 6,346 BTU/hr | BTU Output | 45,141 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 M79S
Based on BTC price of $79,101 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT WhatsMiner M79S, which leads on 4 of 5 weighted factors (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 3061% more hashrate (31.0 vs 980.0 TH/s). The MicroBT Whatsminer M21 claws back ground on 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 M79S sit on each measurable spec:
- MicroBT WhatsMiner M79S 3061% more hashrate (31.0 vs 980.0 TH/s)
- MicroBT Whatsminer M21 86% better power draw (1,860 vs 13,230 W)
- MicroBT WhatsMiner M79S 78% better efficiency (60.0 vs 13.5 J/TH)
- MicroBT WhatsMiner M79S 99% better weight (7,150.0 vs 37.0 kg)
- MicroBT WhatsMiner M79S 611% more heat output (6,346 vs 45,141 BTU/hr)
- MicroBT WhatsMiner M79S 57% more home mining score (28.0 vs 44.0)
Best For...
Best for Profitability
MicroBT WhatsMiner M79S$7.26/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M79SScore: 44/100. 50 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M79S13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M21 or MicroBT WhatsMiner M79S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M79S is more profitable at $3.92/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 M79S better for noise-sensitive spaces?
The MicroBT WhatsMiner M79S 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.
For mining at home, should I pick the MicroBT Whatsminer M21 or the MicroBT WhatsMiner M79S?
The MicroBT WhatsMiner M79S 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 M79S on J/TH?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT WhatsMiner M79S runs at 13.5 J/TH — a difference of 46.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 78% better efficiency (60.0 vs 13.5 J/TH).