Bitmain Antminer S9j (14.5Th) vs Bitaxe Supra
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S9j (14.5Th) | Specification | Bitaxe Supra |
|---|---|---|
| 14.5 TH/s | Hashrate | 600.0 GH/s |
| 1,350 W | Power Consumption | 15 W |
| 93.1 J/TH | Efficiency | 25.0 J/TH |
| — | Noise Level | 35 dB |
| 4,200.0 kg | Weight | 0.3 kg |
| 4,606 BTU/hr | BTU Output | 51 BTU/hr |
| 31/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S9j (14.5Th)
Bitaxe Supra
Based on BTC price of $79,051 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitaxe Supra, which leads on 4 of 6 weighted factors (efficiency, power consumption, home mining score, noise level). The standout gap is 99% better power draw (1,350.0 vs 15.0 W) in the Bitaxe Supra's favour. The Bitmain Antminer S9j (14.5Th) holds the edge in hashrate and price-performance. 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 Bitaxe Supra diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S9j (14.5Th) 2317% more hashrate (14.5 vs 0.6 TH/s)
- Bitaxe Supra 99% better power draw (1,350.0 vs 15.0 W)
- Bitaxe Supra 73% better efficiency (93.1 vs 25.0 J/TH)
- Bitaxe Supra 100% better weight (4,200.0 vs 0.3 kg)
- Bitmain Antminer S9j (14.5Th) 8896% more heat output (4,606.2 vs 51.2 BTU/hr)
- Bitaxe Supra 126% more home mining score (31.0 vs 70.0)
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 | Bitaxe Supra |
|---|---|---|
| $65 | Upfront cost (MSRP) | $89 |
| -$2.71 | Daily net profit | -$0.01 |
| -$1,055 | Net after 1 year | -$94 |
| -$2,045 | Net after 2 years | -$99 |
| -$3,035 | Net after 3 years | -$105 |
| 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
Bitaxe SupraScore: 70/100. 35 dB noise level.
Best for Efficiency
Bitaxe Supra25.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S9j (14.5Th) or the Bitaxe Supra?
At the current BTC price and a $0.10/kWh electricity rate, the Bitaxe Supra is more profitable at $-0.01/day compared to $-2.71/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.
Is the Bitmain Antminer S9j (14.5Th) or the Bitaxe Supra better for noise-sensitive spaces?
The Bitaxe Supra is quieter at 35 dB compared to the Bitmain Antminer S9j (14.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S9j (14.5Th) vs Bitaxe Supra: which fits a residential setup better?
The Bitaxe Supra scores 70/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer S9j (14.5Th)). 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 S9j (14.5Th) and Bitaxe Supra on J/TH?
The Bitmain Antminer S9j (14.5Th) runs at 93.1 J/TH while the Bitaxe Supra runs at 25.0 J/TH — a difference of 68.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 73% better efficiency (93.1 vs 25.0 J/TH).