Aisen A1 Pro vs Bitmain Antminer S21 Immersion (227Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Aisen A1 Pro | Specification | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| 23.0 TH/s | Hashrate | 227.0 TH/s |
| 2,200 W | Power Consumption | 3,623 W |
| 95.7 J/TH | Efficiency | 16.0 J/TH |
| — | Noise Level | 75 dB |
| — | Weight | 17.2 kg |
| 7,506 BTU/hr | BTU Output | 12,362 BTU/hr |
| 26/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Aisen | Manufacturer | Bitmain |
Profitability Comparison
Aisen A1 Pro
Bitmain Antminer S21 Immersion (227Th)
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 Bitmain Antminer S21 Immersion (227Th) wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The Aisen A1 Pro holds the edge in power consumption. 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
Bitmain Antminer S21 Immersion (227Th)Score: 30/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (227Th)16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Aisen A1 Pro or Bitmain Antminer S21 Immersion (227Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (227Th) is more profitable at $-0.56/day compared to $-4.46/day for the Aisen A1 Pro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Aisen A1 Pro or Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S21 Immersion (227Th) is quieter at 75 dB compared to the Aisen A1 Pro at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Aisen A1 Pro or Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S21 Immersion (227Th) scores 30/100 on our Home Mining Score (vs 26/100 for the Aisen A1 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 Aisen A1 Pro and Bitmain Antminer S21 Immersion (227Th)?
The Aisen A1 Pro runs at 95.7 J/TH while the Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH — a difference of 79.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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