Bitmain Antminer S21 XP+ Hyd (500Th) vs Bitmain Antminer S9i (14Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP+ Hyd (500Th) | Specification | Bitmain Antminer S9i (14Th) |
|---|---|---|
| 500.0 TH/s | Hashrate | 14.0 TH/s |
| 5,500 W | Power Consumption | 1,320 W |
| 11.0 J/TH | Efficiency | 94.3 J/TH |
| 50 dB | Noise Level | — |
| 13.8 kg | Weight | 4,200.0 kg |
| 18,766 BTU/hr | BTU Output | 4,504 BTU/hr |
| 44/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 XP+ Hyd (500Th)
Bitmain Antminer S9i (14Th)
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 S21 XP+ Hyd (500Th) wins on 4 of 6 factors (efficiency, hashrate, home mining score, noise level). The Bitmain Antminer S9i (14Th) holds the edge in power consumption 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 S21 XP+ Hyd (500Th)$4.89/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21 XP+ Hyd (500Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP+ Hyd (500Th)11.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 XP+ Hyd (500Th) or Bitmain Antminer S9i (14Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP+ Hyd (500Th) is more profitable at $2.16/day compared to $-2.74/day for the Bitmain Antminer S9i (14Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21 XP+ Hyd (500Th) or Bitmain Antminer S9i (14Th)?
The Bitmain Antminer S21 XP+ Hyd (500Th) is quieter at 50 dB compared to the Bitmain Antminer S9i (14Th) 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 XP+ Hyd (500Th) or Bitmain Antminer S9i (14Th)?
The Bitmain Antminer S21 XP+ Hyd (500Th) scores 44/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9i (14Th)). 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 XP+ Hyd (500Th) and Bitmain Antminer S9i (14Th)?
The Bitmain Antminer S21 XP+ Hyd (500Th) runs at 11.0 J/TH while the Bitmain Antminer S9i (14Th) runs at 94.3 J/TH — a difference of 83.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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