Whatsminer M50S vs MicroBT Whatsminer M66
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Whatsminer M50S | Specification | MicroBT Whatsminer M66 |
|---|---|---|
| 126.0 TH/s | Taux de hachage | 238.0 TH/s |
| 3,276 W | Consommation électrique | 4,736 W |
| 26.0 J/TH | Efficiency | 19.9 J/TH |
| 75 dB | Niveau de bruit | — |
| 12.8 kg | Weight | 16.0 kg |
| 11,178 BTU/hr | BTU Output | 16,159 BTU/hr |
| 36/100 | Home Mining Score | 16/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
Whatsminer M50S
MicroBT Whatsminer M66
Based on BTC price of $78,179 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the MicroBT Whatsminer M66, which leads on 3 of 6 weighted factors (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 89% more hashrate (126 vs 238 TH/s). The Whatsminer M50S holds the edge in consommation électrique and score de minage domestique and niveau sonore. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Whatsminer M50S and MicroBT Whatsminer M66 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT Whatsminer M66 89% more hashrate (126 vs 238 TH/s)
- Whatsminer M50S 31% better power draw (3,276 vs 4,736 W)
- MicroBT Whatsminer M66 23% better efficacité (26.0 vs 19.9 J/TH)
- Whatsminer M50S 20% better weight (12.8 vs 16.0 kg)
- MicroBT Whatsminer M66 45% more heat output (11,178 vs 16,159 BTU/hr)
- Whatsminer M50S 125% more score de minage domestique (36.0 vs 16.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Whatsminer M50S | Metric | MicroBT Whatsminer M66 |
|---|---|---|
| $3,200 | Upfront cost (MSRP) | $3,672 |
| -$3.33 | Daily net profit | -$2.80 |
| -$4,415 | Net after 1 year | -$4,695 |
| -$5,630 | Net after 2 years | -$5,719 |
| -$6,846 | Net after 3 years | -$6,742 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
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
TieBoth miners produce similar daily profit.
Best for Home Mining
Whatsminer M50SScore: 36/100. 75 dB noise level.
Best for Efficiency
MicroBT Whatsminer M6619.9 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Whatsminer M50S or MicroBT Whatsminer M66 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M66 is more profitable at $-2.80/day compared to $-3.33/day for the Whatsminer M50S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Whatsminer M50S or the MicroBT Whatsminer M66 better for noise-sensitive spaces?
The Whatsminer M50S is quieter at 75 dB compared to the MicroBT Whatsminer M66 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Whatsminer M50S or MicroBT Whatsminer M66?
The Whatsminer M50S scores 36/100 on our Home Mining Score (vs 16/100 for the MicroBT Whatsminer M66). 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 Whatsminer M50S and MicroBT Whatsminer M66?
The Whatsminer M50S runs at 26.0 J/TH while the MicroBT Whatsminer M66 runs at 19.9 J/TH — a difference of 6.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 23% better efficacité (26.0 vs 19.9 J/TH).