Bitmain Antminer S21+ Hyd vs Bitmain Antminer S23e U2H
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd | Specification | Bitmain Antminer S23e U2H |
|---|---|---|
| 319.0 TH/s | Hashrate | 865.0 TH/s |
| 4,785 W | Power Consumption | 8,650 W |
| 15.0 J/TH | Efficiency | 10.0 J/TH |
| 50 dB | Noise Level | — |
| 17.5 kg | Weight | 42.0 kg |
| 16,326 BTU/hr | BTU Output | 29,514 BTU/hr |
| 44/100 | Home Mining Score | 16/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21+ Hyd
Bitmain Antminer S23e U2H
Based on BTC price of $70,862 and current network difficulty as of Mar 25, 2026. Actual results vary.
Verdict
Both the Bitmain Antminer S21+ Hyd and Bitmain Antminer S23e U2H are closely matched across our scoring factors, with neither holding a decisive advantage. Your choice should depend on your specific priorities — review the specs and profitability analysis above.
Best For...
Best for Profitability
Bitmain Antminer S23e U2H$7.49/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21+ HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S23e U2H10.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21+ Hyd or Bitmain Antminer S23e U2H more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S23e U2H is more profitable at $5.81/day compared to $-1.69/day for the Bitmain Antminer S21+ Hyd. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21+ Hyd or Bitmain Antminer S23e U2H?
The Bitmain Antminer S21+ Hyd is quieter at 50 dB compared to the Bitmain Antminer S23e U2H 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+ Hyd or Bitmain Antminer S23e U2H?
The Bitmain Antminer S21+ Hyd scores 44/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S23e U2H). 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+ Hyd and Bitmain Antminer S23e U2H?
The Bitmain Antminer S21+ Hyd runs at 15.0 J/TH while the Bitmain Antminer S23e U2H runs at 10.0 J/TH — a difference of 5.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.