Antminer S21 Hydro vs Canaan Avalon A1566I
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Hydro | Specification | Canaan Avalon A1566I |
|---|---|---|
| 335.0 TH/s | Hashrate | 249.0 TH/s |
| 5,360 W | Power Consumption | 4,500 W |
| 16.0 J/TH | Efficiency | 18.1 J/TH |
| 50 dB | Noise Level | 50 dB |
| 15.8 kg | Weight | 11.3 kg |
| 18,288 BTU/hr | BTU Output | 15,354 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21 Hydro
Canaan Avalon A1566I
Based on BTC price of $77,334 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Hydro wins on 2 of 4 factors (efficiency, hashrate). The Canaan Avalon A1566I 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
Antminer S21 Hydro16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21 Hydro or Canaan Avalon A1566I more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Hydro is more profitable at $-0.85/day compared to $-1.87/day for the Canaan Avalon A1566I. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21 Hydro or Canaan Avalon A1566I?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer S21 Hydro or Canaan Avalon A1566I?
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 Antminer S21 Hydro and Canaan Avalon A1566I?
The Antminer S21 Hydro runs at 16.0 J/TH while the Canaan Avalon A1566I runs at 18.1 J/TH — a difference of 2.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.