Antminer S19j Pro vs Antminer S9
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j Pro | Specification | Antminer S9 |
|---|---|---|
| 100.0 TH/s | Hashrate | 14.0 TH/s |
| 3,050 W | Power Consumption | 1,350 W |
| 30.5 J/TH | Efficiency | 96.4 J/TH |
| 75 dB | Noise Level | 76 dB |
| 13.2 kg | Weight | 4.2 kg |
| 10,407 BTU/hr | BTU Output | 4,606 BTU/hr |
| 84/100 | Home Mining Score | 83/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19j Pro
Antminer S9
Based on BTC price of $78,208 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Two generations apart, the S9 and S19j Pro represent the evolution of Bitmain's ASIC technology from 16nm to 5nm process nodes.
The S19j Pro delivers roughly 3x better efficiency than the S9. While neither is current-gen, the S19j Pro remains profitable at moderate electricity rates. The S9 is now primarily used as a space heater.
Spec Deltas
Here is every spec where the Antminer S19j Pro and Antminer S9 actually differ, with the gap quantified:
- Antminer S19j Pro 614% more hashrate (100.0 vs 14.0 TH/s)
- Antminer S9 56% better power draw (3,050 vs 1,350 W)
- Antminer S19j Pro 68% better efficiency (30.5 vs 96.4 J/TH)
- Antminer S19j Pro 1% better noise (75.0 vs 76.0 dB)
- Antminer S9 68% better weight (13.2 vs 4.2 kg)
- Antminer S19j Pro 126% more heat output (10,407 vs 4,606 BTU/hr)
- Antminer S19j Pro 1% more home mining score (84.0 vs 83.0)
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.
| Antminer S19j Pro | Metric | Antminer S9 |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | — |
| -$3.72 | Daily net profit | -$2.74 |
| -$3,858 | Net after 1 year | -$999 |
| -$5,216 | Net after 2 years | -$1,997 |
| -$6,574 | Net after 3 years | -$2,996 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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
Antminer S19j ProScore: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S19j Pro30.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Should I upgrade from an S9 to an S19j Pro?
If you want to mine profitably, yes. The S19j Pro is much more efficient and still competitive. However, if you are using the S9 purely as a heater, it may still serve that purpose effectively.
How do the S9 and S19j Pro compare as space heaters?
Both convert nearly all electricity to heat. The S9 at 1400W produces about 4,777 BTU/hr while the S19j Pro at 3068W produces about 10,468 BTU/hr. The S19j Pro heats a larger space but also mines more BTC.