MicroBT Whatsminer M21S vs MicroBT WhatsMiner M70S+
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the MicroBT WhatsMiner M70S+ is the stronger pick — it leads on 4 of 4 head-to-head factors. The MicroBT Whatsminer M21S runs 56.0 TH/s at 60 J/TH; the MicroBT WhatsMiner M70S+ runs 262.0 TH/s at 12.5 J/TH.
Specs verified against the D-Central Mining Bible \xc2\xb7 June 2026
Specifications Comparison
| MicroBT Whatsminer M21S | Specification | MicroBT WhatsMiner M70S+ |
|---|---|---|
| 56.0 TH/s | Taux de hachage | 262.0 TH/s |
| 3,360 W | Consommation électrique | 3,275 W |
| 60.0 J/TH | Efficiency | 12.5 J/TH |
| — | Niveau de bruit | 75 dB |
| 12.5 kg | Weight | 13.5 kg |
| 11,464 BTU/hr | BTU Output | 11,174 BTU/hr |
| 8/100 | Home Mining Score | 8/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21S
MicroBT WhatsMiner M70S+
Based on BTC price of $64,360 and current network difficulty as of Jun 14, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT WhatsMiner M70S+, which leads on 4 of 4 weighted factors (efficacité, hashrate, consommation électrique, niveau sonore). Its biggest concrete edge: 79% better efficacité (60.0 vs 12.5 J/TH). 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 M21S and MicroBT WhatsMiner M70S+ sit on each measurable spec:
- MicroBT WhatsMiner M70S+ 368% more hashrate (56.0 vs 262.0 TH/s)
- MicroBT WhatsMiner M70S+ 3% better power draw (3,360 vs 3,275 W)
- MicroBT WhatsMiner M70S+ 79% better efficacité (60.0 vs 12.5 J/TH)
- MicroBT Whatsminer M21S 7% better weight (12.5 vs 13.5 kg)
- MicroBT Whatsminer M21S 3% more heat output (11,464 vs 11,174 BTU/hr)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| MicroBT Whatsminer M21S | Metric | MicroBT WhatsMiner M70S+ |
|---|---|---|
| $650 | Upfront cost (MSRP) | — |
| -$6.25 | Daily net profit | $0.62 |
| -$2,931 | Net after 1 year | +$228 |
| -$5,213 | Net after 2 years | +$456 |
| -$7,494 | Net after 3 years | +$684 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
MicroBT WhatsMiner M70S+$6.88/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
MicroBT WhatsMiner M70S+12.5 J/TH — lower electricity cost per terahash.
Foire aux questions
MicroBT Whatsminer M21S 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 $0.62/day compared to $-6.25/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
MicroBT Whatsminer M21S 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 M21S at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the MicroBT Whatsminer M21S or MicroBT WhatsMiner M70S+?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the MicroBT Whatsminer M21S and MicroBT WhatsMiner M70S+ on J/TH?
The MicroBT Whatsminer M21S 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 efficacité (60.0 vs 12.5 J/TH).