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 $74,306 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Based on specs, the MicroBT WhatsMiner M76S+ offers 79% better efficiency at 12.5 J/TH compared to the MicroBT Whatsminer M21 at 60.0 J/TH. This directly impacts daily operating costs and long-term profitability.
Best For...
Best for Profitability
MicroBT WhatsMiner M76S+$4.38/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
Is the MicroBT Whatsminer M21 or MicroBT WhatsMiner M76S+ more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M76S+ is more profitable at $0.92/day compared to $-3.47/day for the MicroBT Whatsminer M21. 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 MicroBT WhatsMiner M76S+?
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.
Which is better for home mining, the MicroBT Whatsminer M21 or MicroBT WhatsMiner M76S+?
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.
What is the efficiency difference between MicroBT Whatsminer M21 and MicroBT WhatsMiner M76S+?
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.