Bitmain Antminer S9j (14.5Th) vs Bitmain Antminer S9k (13.5Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9j (14.5Th) | Specification | Bitmain Antminer S9k (13.5Th) |
|---|---|---|
| 14.5 TH/s | Taux de hachage | 13.5 TH/s |
| 1,350 W | Consommation électrique | 1,310 W |
| 93.1 J/TH | Efficiency | 97.0 J/TH |
| — | Niveau de bruit | — |
| 4,200.0 kg | Weight | 4,200.0 kg |
| 4,606 BTU/hr | BTU Output | 4,470 BTU/hr |
| 31/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S9j (14.5Th)
Bitmain Antminer S9k (13.5Th)
Based on BTC price of $77,950 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S9j (14.5Th) edges it: 3 of 4 factors go its way (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 7% more hashrate (14.5 vs 13.5 TH/s). That said, the Bitmain Antminer S9k (13.5Th) isn't beaten everywhere — it still wins consommation électrique. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Bitmain Antminer S9j (14.5Th) and Bitmain Antminer S9k (13.5Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S9j (14.5Th) 7% more hashrate (14.5 vs 13.5 TH/s)
- Bitmain Antminer S9k (13.5Th) 3% better power draw (1,350 vs 1,310 W)
- Bitmain Antminer S9j (14.5Th) 4% better efficacité (93.1 vs 97.0 J/TH)
- Bitmain Antminer S9j (14.5Th) 3% more heat output (4,606 vs 4,470 BTU/hr)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Bitmain Antminer S9j (14.5Th) | Metric | Bitmain Antminer S9k (13.5Th) |
|---|---|---|
| $65 | Upfront cost (MSRP) | $600 |
| -$2.72 | Daily net profit | -$2.66 |
| -$1,058 | Net after 1 year | -$1,571 |
| -$2,051 | Net after 2 years | -$2,542 |
| -$3,043 | Net after 3 years | -$3,512 |
| 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 S9j (14.5Th)93.1 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S9j (14.5Th) vs Bitmain Antminer S9k (13.5Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9k (13.5Th) is more profitable at $-2.66/day compared to $-2.72/day for the Bitmain Antminer S9j (14.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S9j (14.5Th) or Bitmain Antminer S9k (13.5Th)?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Bitmain Antminer S9j (14.5Th) or the Bitmain Antminer S9k (13.5Th)?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Bitmain Antminer S9j (14.5Th) and Bitmain Antminer S9k (13.5Th) on J/TH?
The Bitmain Antminer S9j (14.5Th) runs at 93.1 J/TH while the Bitmain Antminer S9k (13.5Th) runs at 97.0 J/TH — a difference of 3.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 4% better efficacité (93.1 vs 97.0 J/TH).