Antminer S19 XP Hyd vs Antminer S21 XP
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19 XP Hyd | Specification | Antminer S21 XP |
|---|---|---|
| 255.0 TH/s | Hashrate | 270.0 TH/s |
| 5,304 W | Power Consumption | 3,645 W |
| 20.8 J/TH | Efficiency | 13.5 J/TH |
| 50 dB | Noise Level | 75 dB |
| 13.1 kg | Weight | 15.4 kg |
| 18,097 BTU/hr | BTU Output | 12,437 BTU/hr |
| 44/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19 XP Hyd
Antminer S21 XP
Based on BTC price of $79,245 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21 XP, which leads on 3 of 6 weighted factors (efficiency, hashrate, power consumption). The standout gap is 35% better efficiency (20.8 vs 13.5 J/TH) in the Antminer S21 XP's favour. That said, the Antminer S19 XP Hyd isn't beaten everywhere — it still wins home mining score and noise level and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Antminer S19 XP Hyd and Antminer S21 XP actually differ, with the gap quantified:
- Antminer S21 XP 6% more hashrate (255 vs 270 TH/s)
- Antminer S21 XP 31% better power draw (5,304 vs 3,645 W)
- Antminer S21 XP 35% better efficiency (20.8 vs 13.5 J/TH)
- Antminer S19 XP Hyd 33% better noise (50.0 vs 75.0 dB)
- Antminer S19 XP Hyd 15% better weight (13.1 vs 15.4 kg)
- Antminer S19 XP Hyd 46% more heat output (18,097 vs 12,437 BTU/hr)
- Antminer S19 XP Hyd 47% more home mining score (44.0 vs 30.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Antminer S19 XP Hyd | Metric | Antminer S21 XP |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | $8,200 |
| -$3.43 | Daily net profit | $1.10 |
| -$7,752 | Net after 1 year | -$7,799 |
| -$9,004 | Net after 2 years | -$7,398 |
| -$10,256 | Net after 3 years | -$6,998 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~20.5 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 XP$4.53/day higher profit at current rates.
Best for Home Mining
Antminer S19 XP HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Antminer S21 XP13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S19 XP Hyd or the Antminer S21 XP?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 XP is more profitable at $1.10/day compared to $-3.43/day for the Antminer S19 XP Hyd. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S19 XP Hyd vs Antminer S21 XP: which runs at a lower noise level?
The Antminer S19 XP Hyd is quieter at 50 dB compared to the Antminer S21 XP at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Antminer S19 XP Hyd vs Antminer S21 XP: which fits a residential setup better?
The Antminer S19 XP Hyd scores 44/100 on our Home Mining Score (vs 30/100 for the Antminer S21 XP). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S19 XP Hyd and Antminer S21 XP on J/TH?
The Antminer S19 XP Hyd runs at 20.8 J/TH while the Antminer S21 XP runs at 13.5 J/TH — a difference of 7.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 35% better efficiency (20.8 vs 13.5 J/TH).