Bitmain Antminer S19 XP Hyd (257Th) vs Antminer S21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19 XP Hyd (257Th) | Specification | Antminer S21 |
|---|---|---|
| 257.0 TH/s | Hashrate | 200.0 TH/s |
| 5,346 W | Power Consumption | 3,500 W |
| 20.8 J/TH | Efficiency | 17.5 J/TH |
| — | Noise Level | 75 dB |
| — | Weight | 14.6 kg |
| 18,241 BTU/hr | BTU Output | 11,942 BTU/hr |
| 16/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19 XP Hyd (257Th)
Antminer S21
Based on BTC price of $77,685 and current network difficulty as of Apr 24, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 wins on 4 of 6 factors (efficiency, power consumption, home mining score, noise level). The Bitmain Antminer S19 XP Hyd (257Th) holds the edge in hashrate 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
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer S21Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19 XP Hyd (257Th) or Antminer S21 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 is more profitable at $-1.20/day compared to $-3.57/day for the Bitmain Antminer S19 XP Hyd (257Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19 XP Hyd (257Th) or Antminer S21?
The Antminer S21 is quieter at 75 dB compared to the Bitmain Antminer S19 XP Hyd (257Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S19 XP Hyd (257Th) or Antminer S21?
The Antminer S21 scores 36/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S19 XP Hyd (257Th)). 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 S19 XP Hyd (257Th) and Antminer S21?
The Bitmain Antminer S19 XP Hyd (257Th) runs at 20.8 J/TH while the Antminer S21 runs at 17.5 J/TH — a difference of 3.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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