Antminer S21 Pro vs Avalon A1446
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Pro | Specification | Avalon A1446 |
|---|---|---|
| 234.0 TH/s | Hashrate | 135.0 TH/s |
| 3,510 W | Power Consumption | 3,310 W |
| 15.0 J/TH | Efficiency | 24.5 J/TH |
| 75 dB | Noise Level | 75 dB |
| 15.0 kg | Weight | 12.8 kg |
| 11,976 BTU/hr | BTU Output | 11,294 BTU/hr |
| 30/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21 Pro
Avalon A1446
Based on BTC price of $77,638 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Pro wins on 2 of 5 factors (efficiency, hashrate). The Avalon A1446 holds the edge in power consumption and home mining score 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
Avalon A1446Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21 Pro or Avalon A1446 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $0.00/day compared to $-3.08/day for the Avalon A1446. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21 Pro or Avalon A1446?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer S21 Pro or Avalon A1446?
The Avalon A1446 scores 36/100 on our Home Mining Score (vs 30/100 for the Antminer S21 Pro). 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 Pro and Avalon A1446?
The Antminer S21 Pro runs at 15.0 J/TH while the Avalon A1446 runs at 24.5 J/TH — a difference of 9.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.