Bitmain Antminer S21 Immersion (301Th) vs Bitmain Antminer S23
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (301Th) | Specification | Bitmain Antminer S23 |
|---|---|---|
| 301.0 TH/s | Hashrate | 318.0 TH/s |
| 5,569 W | Power Consumption | 3,498 W |
| 18.5 J/TH | Efficiency | 11.0 J/TH |
| 50 dB | Noise Level | 75 dB |
| 17.2 kg | Weight | 14.5 kg |
| 19,001 BTU/hr | BTU Output | 11,935 BTU/hr |
| 44/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 Immersion (301Th)
Bitmain Antminer S23
Based on BTC price of $70,862 and current network difficulty as of Mar 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S23 wins on 3 of 6 factors (efficiency, hashrate, power consumption). The Bitmain Antminer S21 Immersion (301Th) holds the edge in home mining score and noise level 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
Bitmain Antminer S23$5.49/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21 Immersion (301Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S2311.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 Immersion (301Th) or Bitmain Antminer S23 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S23 is more profitable at $1.37/day compared to $-4.12/day for the Bitmain Antminer S21 Immersion (301Th). 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 (301Th) or Bitmain Antminer S23?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the Bitmain Antminer S23 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 (301Th) or Bitmain Antminer S23?
The Bitmain Antminer S21 Immersion (301Th) scores 44/100 on our Home Mining Score (vs 36/100 for the Bitmain Antminer S23). 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 (301Th) and Bitmain Antminer S23?
The Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH while the Bitmain Antminer S23 runs at 11.0 J/TH — a difference of 7.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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