Bitmain Antminer S19 XP Hyd (257Th) vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19 XP Hyd (257Th) | Specification | Antminer S21 Pro |
|---|---|---|
| 257.0 TH/s | Hashrate | 234.0 TH/s |
| 5,346 W | Power Consumption | 3,510 W |
| 20.8 J/TH | Efficiency | 15.0 J/TH |
| — | Noise Level | 75 dB |
| — | Weight | 15.0 kg |
| 18,241 BTU/hr | BTU Output | 11,976 BTU/hr |
| 16/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19 XP Hyd (257Th)
Antminer S21 Pro
Based on BTC price of $79,022 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21 Pro, which leads on 4 of 6 weighted factors (efficiency, power consumption, home mining score, noise level). Where it pulls away hardest is 34% better power draw (5,346 vs 3,510 W). That said, the Bitmain Antminer S19 XP Hyd (257Th) isn't beaten everywhere — it still wins hashrate and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S19 XP Hyd (257Th) and Antminer S21 Pro sit on each measurable spec:
- Bitmain Antminer S19 XP Hyd (257Th) 10% more hashrate (257 vs 234 TH/s)
- Antminer S21 Pro 34% better power draw (5,346 vs 3,510 W)
- Antminer S21 Pro 28% better efficiency (20.8 vs 15.0 J/TH)
- Bitmain Antminer S19 XP Hyd (257Th) 52% more heat output (18,241 vs 11,976 BTU/hr)
- Antminer S21 Pro 88% more home mining score (16.0 vs 30.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Bitmain Antminer S19 XP Hyd (257Th) | Metric | Antminer S21 Pro |
|---|---|---|
| $1,059 | Upfront cost (MSRP) | $6,800 |
| -$3.48 | Daily net profit | $0.09 |
| -$2,331 | Net after 1 year | -$6,769 |
| -$3,603 | Net after 2 years | -$6,738 |
| -$4,875 | Net after 3 years | -$6,707 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~218.4 years to pay back at current rates |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
Antminer S21 Pro$3.57/day higher profit at current rates.
Best for Home Mining
Antminer S21 ProScore: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S19 XP Hyd (257Th) or the Antminer S21 Pro?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $0.09/day compared to $-3.48/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 Pro?
The Antminer S21 Pro 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.
For mining at home, should I pick the Bitmain Antminer S19 XP Hyd (257Th) or the Antminer S21 Pro?
The Antminer S21 Pro scores 30/100 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.
How far apart are the Bitmain Antminer S19 XP Hyd (257Th) and Antminer S21 Pro on J/TH?
The Bitmain Antminer S19 XP Hyd (257Th) runs at 20.8 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 5.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 28% better efficiency (20.8 vs 15.0 J/TH).
Compare Bitmain Antminer S19 XP Hyd (257Th) with...
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer AL1
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer D7
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer D9
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer E9 Pro
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer K7
- Bitmain Antminer S19 XP Hyd (257Th) vs Antminer KS3