MicroBT Whatsminer M10S vs MicroBT Whatsminer M66
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M10S | Specification | MicroBT Whatsminer M66 |
|---|---|---|
| 55.0 TH/s | Hashrate | 238.0 TH/s |
| 3,500 W | Power Consumption | 4,736 W |
| 63.6 J/TH | Efficiency | 19.9 J/TH |
| — | Noise Level | — |
| 10,700.0 kg | Weight | 16.0 kg |
| 11,942 BTU/hr | BTU Output | 16,159 BTU/hr |
| 22/100 | Home Mining Score | 16/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M10S
MicroBT Whatsminer M66
Based on BTC price of $79,027 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT Whatsminer M66 comes out ahead — it takes 3 of 5 (efficiency, hashrate, price-performance). Its biggest concrete edge: 333% more hashrate (55.0 vs 238.0 TH/s). The MicroBT Whatsminer M10S claws back ground on power consumption and home mining score. 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 M10S and MicroBT Whatsminer M66 actually differ, with the gap quantified:
- MicroBT Whatsminer M66 333% more hashrate (55.0 vs 238.0 TH/s)
- MicroBT Whatsminer M10S 26% better power draw (3,500 vs 4,736 W)
- MicroBT Whatsminer M66 69% better efficiency (63.6 vs 19.9 J/TH)
- MicroBT Whatsminer M66 100% better weight (10,700.0 vs 16.0 kg)
- MicroBT Whatsminer M66 35% more heat output (11,942 vs 16,159 BTU/hr)
- MicroBT Whatsminer M10S 38% more home mining score (22.0 vs 16.0)
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 M10S | Metric | MicroBT Whatsminer M66 |
|---|---|---|
| $3,800 | Upfront cost (MSRP) | $3,672 |
| -$6.40 | Daily net profit | -$2.71 |
| -$6,136 | Net after 1 year | -$4,662 |
| -$8,472 | Net after 2 years | -$5,651 |
| -$10,808 | Net after 3 years | -$6,641 |
| 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
MicroBT Whatsminer M10SScore: 22/100. 0 dB noise level.
Best for Efficiency
MicroBT Whatsminer M6619.9 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M10S 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 $-2.71/day compared to $-6.40/day for the MicroBT Whatsminer M10S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the MicroBT Whatsminer M10S or the MicroBT Whatsminer M66 better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the MicroBT Whatsminer M10S or the MicroBT Whatsminer M66?
The MicroBT Whatsminer M10S scores 22/100 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 MicroBT Whatsminer M10S and MicroBT Whatsminer M66?
The MicroBT Whatsminer M10S runs at 63.6 J/TH while the MicroBT Whatsminer M66 runs at 19.9 J/TH — a difference of 43.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 69% better efficiency (63.6 vs 19.9 J/TH).