Bitmain Antminer S21 XP Hyd vs Antminer S9
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP Hyd | Specification | Antminer S9 |
|---|---|---|
| 473.0 TH/s | Hashrate | 14.0 TH/s |
| 5,676 W | Power Consumption | 1,350 W |
| 12.0 J/TH | Efficiency | 96.4 J/TH |
| 50 dB | Noise Level | 76 dB |
| 12.3 kg | Weight | 4.2 kg |
| 19,367 BTU/hr | BTU Output | 4,606 BTU/hr |
| 44/100 | Home Mining Score | 83/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 XP Hyd
Antminer S9
Based on BTC price of $77,476 and current network difficulty as of Apr 25, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 XP Hyd wins on 3 of 5 factors (efficiency, hashrate, noise level). The Antminer S9 holds the edge in power consumption and home mining score. 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$6.10/day higher profit at current rates.
Best for Home Mining
Antminer S9Score: 83/100. 76 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP Hyd12.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21 XP Hyd or Antminer S9 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Hyd is more profitable at $3.37/day compared to $-2.74/day for the Antminer S9. 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 or Antminer S9?
The Bitmain Antminer S21 XP Hyd is quieter at 50 dB compared to the Antminer S9 at 76 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 or Antminer S9?
The Antminer S9 scores 83/100 on our Home Mining Score (vs 44/100 for the Bitmain Antminer S21 XP Hyd). 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 and Antminer S9?
The Bitmain Antminer S21 XP Hyd runs at 12.0 J/TH while the Antminer S9 runs at 96.4 J/TH — a difference of 84.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.