Antminer S19 XP Hyd vs Bitmain Antminer S21+ Hyd
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19 XP Hyd | Specification | Bitmain Antminer S21+ Hyd |
|---|---|---|
| 255.0 TH/s | Hashrate | 319.0 TH/s |
| 5,304 W | Power Consumption | 4,785 W |
| 20.8 J/TH | Efficiency | 15.0 J/TH |
| 50 dB | Noise Level | 50 dB |
| 13.1 kg | Weight | 17.5 kg |
| 18,097 BTU/hr | BTU Output | 16,326 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19 XP Hyd
Bitmain Antminer S21+ Hyd
Based on BTC price of $78,172 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Two generations of hydro-cooled Bitmain miners. The S19 XP Hyd pushed liquid cooling efficiency in the S19 era, while the S21 Hyd brings next-gen chips.
The S21 Hyd delivers a meaningful efficiency improvement from its newer chip generation. The S19 XP Hyd remains a capable machine, particularly on the secondary market where pricing reflects its age.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer S19 XP Hyd and Bitmain Antminer S21+ Hyd sit on each measurable spec:
- Bitmain Antminer S21+ Hyd 25% more hashrate (255 vs 319 TH/s)
- Bitmain Antminer S21+ Hyd 10% better power draw (5,304 vs 4,785 W)
- Bitmain Antminer S21+ Hyd 28% better efficiency (20.8 vs 15.0 J/TH)
- Antminer S19 XP Hyd 25% better weight (13.1 vs 17.5 kg)
- Antminer S19 XP Hyd 11% more heat output (18,097 vs 16,326 BTU/hr)
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 | Bitmain Antminer S21+ Hyd |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | $2,499 |
| -$3.56 | Daily net profit | -$0.01 |
| -$7,798 | Net after 1 year | -$2,502 |
| -$9,096 | Net after 2 years | -$2,505 |
| -$10,394 | Net after 3 years | -$2,508 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
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
TieBoth miners produce similar daily profit.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S21+ Hyd15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Are the cooling connections compatible?
Both use standard liquid cooling fittings, so an existing hydro cooling infrastructure can typically accommodate either model with minor adjustments.
Which is more reliable?
The S19 XP Hyd has a longer track record, but the S21 Hyd benefits from lessons learned. Both are well-engineered for commercial deployment.