Bitmain Antminer S21 Immersion (227Th) vs PiAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (227Th) | Specification | PiAxe |
|---|---|---|
| 227.0 TH/s | Hashrate | 500.0 GH/s |
| 3,623 W | Power Consumption | 15 W |
| 16.0 J/TH | Efficiency | 30.0 J/TH |
| 75 dB | Noise Level | 30 dB |
| 17.2 kg | Weight | 0.2 kg |
| 12,362 BTU/hr | BTU Output | 51 BTU/hr |
| 30/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S21 Immersion (227Th)
PiAxe
Based on BTC price of $77,020 and current network difficulty as of Apr 29, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 Immersion (227Th) wins on 3 of 6 factors (efficiency, hashrate, price-performance). The PiAxe holds the edge in power consumption and home mining score and noise level. 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
PiAxeScore: 70/100. 30 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 Bitmain Antminer S21 Immersion (227Th) or PiAxe more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the PiAxe is more profitable at $-0.02/day compared to $-0.59/day for the Bitmain Antminer S21 Immersion (227Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 Immersion (227Th) or PiAxe?
The PiAxe is quieter at 30 dB compared to the Bitmain Antminer S21 Immersion (227Th) at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S21 Immersion (227Th) or PiAxe?
The PiAxe scores 70/100 on our Home Mining Score (vs 30/100 for the Bitmain Antminer S21 Immersion (227Th)). 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 Bitmain Antminer S21 Immersion (227Th) and PiAxe?
The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the PiAxe runs at 30.0 J/TH — a difference of 14.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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