PiAxe vs Whatsminer M66S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| PiAxe | Specification | Whatsminer M66S |
|---|---|---|
| 500.0 GH/s | Hashrate | 298.0 TH/s |
| 15 W | Power Consumption | 5,518 W |
| 30.0 J/TH | Efficiency | 18.5 J/TH |
| 30 dB | Noise Level | 50 dB |
| 0.2 kg | Weight | 13.5 kg |
| 51 BTU/hr | BTU Output | 18,827 BTU/hr |
| 70/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| D-Central | Manufacturer | MicroBT |
Profitability Comparison
PiAxe
Whatsminer M66S
Based on BTC price of $79,066 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Whatsminer M66S edges it: 3 of 6 factors go its way (efficiency, hashrate, price-performance). Its biggest concrete edge: 59500% more hashrate (0.5 vs 298.0 TH/s). That said, the PiAxe isn't beaten everywhere — it still wins power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The PiAxe and Whatsminer M66S diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Whatsminer M66S 59500% more hashrate (0.5 vs 298.0 TH/s)
- PiAxe 100% better power draw (15.0 vs 5,518.0 W)
- Whatsminer M66S 38% better efficiency (30.0 vs 18.5 J/TH)
- PiAxe 40% better noise (30.0 vs 50.0 dB)
- PiAxe 99% better weight (0.2 vs 13.5 kg)
- Whatsminer M66S 36672% more heat output (51.2 vs 18,827.4 BTU/hr)
- PiAxe 59% more home mining score (70.0 vs 44.0)
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.
| PiAxe | Metric | Whatsminer M66S |
|---|---|---|
| $79 | Upfront cost (MSRP) | $8,000 |
| -$0.02 | Daily net profit | -$2.40 |
| -$85 | Net after 1 year | -$8,876 |
| -$92 | Net after 2 years | -$9,752 |
| -$98 | Net after 3 years | -$10,629 |
| 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
PiAxeScore: 70/100. 30 dB noise level.
Best for Efficiency
Whatsminer M66S18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
PiAxe vs Whatsminer M66S: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the PiAxe is more profitable at $-0.02/day compared to $-2.40/day for the Whatsminer M66S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the PiAxe or Whatsminer M66S?
The PiAxe is quieter at 30 dB compared to the Whatsminer M66S at 50 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the PiAxe or Whatsminer M66S?
The PiAxe scores 70/100 on our Home Mining Score (vs 44/100 for the Whatsminer M66S). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the PiAxe and Whatsminer M66S on J/TH?
The PiAxe runs at 30.0 J/TH while the Whatsminer M66S runs at 18.5 J/TH — a difference of 11.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 38% better efficiency (30.0 vs 18.5 J/TH).