Bitmain Antminer S15 (28Th) vs Bitmain Antminer S21 Immersion (227Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S15 (28Th) | Specification | Bitmain Antminer S21 Immersion (227Th) |
|---|---|---|
| 28.0 TH/s | Hashrate | 227.0 TH/s |
| 1,596 W | Power Consumption | 3,623 W |
| 57.0 J/TH | Efficiency | 16.0 J/TH |
| — | Noise Level | 75 dB |
| 7,000.0 kg | Weight | 17.2 kg |
| 5,446 BTU/hr | BTU Output | 12,362 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S15 (28Th)
Bitmain Antminer S21 Immersion (227Th)
Based on BTC price of $80,761 and current network difficulty as of May 10, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 Immersion (227Th) wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). The Bitmain Antminer S15 (28Th) 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
Bitmain Antminer S21 Immersion (227Th)$2.76/day higher profit at current rates.
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 S15 (28Th) 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 $0.00/day compared to $-2.76/day for the Bitmain Antminer S15 (28Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S15 (28Th) or Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S21 Immersion (227Th) is quieter at 75 dB compared to the Bitmain Antminer S15 (28Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S15 (28Th) or Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S21 Immersion (227Th) scores 30/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer S15 (28Th)). 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 S15 (28Th) and Bitmain Antminer S21 Immersion (227Th)?
The Bitmain Antminer S15 (28Th) runs at 57.0 J/TH while the Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH — a difference of 41.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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