Bitmain Antminer S21 Immersion (227Th) vs StrongU STU-U8
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (227Th) | Specification | StrongU STU-U8 |
|---|---|---|
| 227.0 TH/s | Hashrate | 46.0 TH/s |
| 3,623 W | Power Consumption | 2,100 W |
| 16.0 J/TH | Efficiency | 45.7 J/TH |
| 75 dB | Noise Level | — |
| 17.2 kg | Weight | 8,200.0 kg |
| 12,362 BTU/hr | BTU Output | 7,165 BTU/hr |
| 30/100 | Home Mining Score | 26/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | StrongU |
Profitability Comparison
Bitmain Antminer S21 Immersion (227Th)
StrongU STU-U8
Based on BTC price of $78,046 and current network difficulty as of Apr 26, 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 StrongU STU-U8 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 Bitmain Antminer S21 Immersion (227Th) or StrongU STU-U8 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (227Th) is more profitable at $-0.48/day compared to $-3.38/day for the StrongU STU-U8. 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 StrongU STU-U8?
The Bitmain Antminer S21 Immersion (227Th) is quieter at 75 dB compared to the StrongU STU-U8 at 0 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 StrongU STU-U8?
The Bitmain Antminer S21 Immersion (227Th) scores 30/100 on our Home Mining Score (vs 26/100 for the StrongU STU-U8). 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 StrongU STU-U8?
The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the StrongU STU-U8 runs at 45.7 J/TH — a difference of 29.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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