Antminer S21 Hydro vs Canaan Avalon Mini 3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Hydro | Specification | Canaan Avalon Mini 3 |
|---|---|---|
| 335.0 TH/s | Hashrate | 37.5 TH/s |
| 5,360 W | Power Consumption | 800 W |
| 16.0 J/TH | Efficiency | 21.3 J/TH |
| 50 dB | Noise Level | 33 dB |
| 15.8 kg | Weight | 8.4 kg |
| 18,288 BTU/hr | BTU Output | 2,730 BTU/hr |
| 44/100 | Home Mining Score | 65/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21 Hydro
Canaan Avalon Mini 3
Based on BTC price of $77,461 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Both the Antminer S21 Hydro and Canaan Avalon Mini 3 are closely matched across our scoring factors, with neither holding a decisive advantage. Your choice should depend on your specific priorities — review the specs and profitability analysis above.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Canaan Avalon Mini 3Score: 65/100. 33 dB noise level.
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 Mini 3 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Canaan Avalon Mini 3 is more profitable at $-0.57/day compared to $-0.83/day for the Antminer S21 Hydro. 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 Mini 3?
The Canaan Avalon Mini 3 is quieter at 33 dB compared to the Antminer S21 Hydro at 50 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S21 Hydro or Canaan Avalon Mini 3?
The Canaan Avalon Mini 3 scores 65/100 on our Home Mining Score (vs 44/100 for the Antminer S21 Hydro). 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 Antminer S21 Hydro and Canaan Avalon Mini 3?
The Antminer S21 Hydro runs at 16.0 J/TH while the Canaan Avalon Mini 3 runs at 21.3 J/TH — a difference of 5.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.