Bitmain Antminer S19 XP+ Hyd (279Th) vs Whatsminer M66S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19 XP+ Hyd (279Th) | Specification | Whatsminer M66S |
|---|---|---|
| 279.0 TH/s | Hashrate | 298.0 TH/s |
| 5,301 W | Power Consumption | 5,518 W |
| 19.0 J/TH | Efficiency | 18.5 J/TH |
| 50 dB | Noise Level | 50 dB |
| 13.4 kg | Weight | 13.5 kg |
| 18,087 BTU/hr | BTU Output | 18,827 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | MicroBT |
Profitability Comparison
Bitmain Antminer S19 XP+ Hyd (279Th)
Whatsminer M66S
Based on BTC price of $77,936 and current network difficulty as of Apr 27, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Whatsminer M66S wins on 2 of 4 factors (efficiency, hashrate). The Bitmain Antminer S19 XP+ Hyd (279Th) holds the edge in power consumption and price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Whatsminer M66S18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19 XP+ Hyd (279Th) or Whatsminer M66S more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Whatsminer M66S is more profitable at $-2.48/day compared to $-2.64/day for the Bitmain Antminer S19 XP+ Hyd (279Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19 XP+ Hyd (279Th) or Whatsminer M66S?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S19 XP+ Hyd (279Th) or Whatsminer M66S?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Bitmain Antminer S19 XP+ Hyd (279Th) and Whatsminer M66S?
The Bitmain Antminer S19 XP+ Hyd (279Th) runs at 19.0 J/TH while the Whatsminer M66S runs at 18.5 J/TH — a difference of 0.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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