MicroBT Whatsminer M21 vs MicroBT WhatsMiner M76S+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT WhatsMiner M76S+ |
|---|---|---|
| 31.0 TH/s | Hashrate | 416.0 TH/s |
| 1,860 W | Power Consumption | 5,200 W |
| 60.0 J/TH | Efficiency | 12.5 J/TH |
| — | Noise Level | 75 dB |
| 7,150.0 kg | Weight | 18.0 kg |
| 6,346 BTU/hr | BTU Output | 17,742 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT WhatsMiner M76S+
Based on BTC price of $77,927 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT WhatsMiner M76S+ comes out ahead — it takes 4 of 5 (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 1242% more hashrate (31.0 vs 416.0 TH/s). The MicroBT Whatsminer M21 claws back ground on 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 M76S+ actually differ, with the gap quantified:
- MicroBT WhatsMiner M76S+ 1242% more hashrate (31.0 vs 416.0 TH/s)
- MicroBT Whatsminer M21 64% better power draw (1,860 vs 5,200 W)
- MicroBT WhatsMiner M76S+ 79% better efficiency (60.0 vs 12.5 J/TH)
- MicroBT WhatsMiner M76S+ 100% better weight (7,150.0 vs 18.0 kg)
- MicroBT WhatsMiner M76S+ 180% more heat output (6,346 vs 17,742 BTU/hr)
- MicroBT WhatsMiner M76S+ 7% more home mining score (28.0 vs 30.0)
Best For...
Best for Profitability
MicroBT WhatsMiner M76S+$5.79/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M76S+Score: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M76S+12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
MicroBT Whatsminer M21 vs MicroBT WhatsMiner M76S+: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M76S+ is more profitable at $2.44/day compared to $-3.35/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 M76S+ better for noise-sensitive spaces?
The MicroBT WhatsMiner M76S+ 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.
MicroBT Whatsminer M21 vs MicroBT WhatsMiner M76S+: which fits a residential setup better?
The MicroBT WhatsMiner M76S+ scores 30/100 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.
MicroBT Whatsminer M21 vs MicroBT WhatsMiner M76S+: how much does the efficiency gap matter?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT WhatsMiner M76S+ 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).