Antminer S19j Pro vs PiAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j Pro | Specification | PiAxe |
|---|---|---|
| 100.0 TH/s | Hashrate | 500.0 GH/s |
| 3,050 W | Power Consumption | 15 W |
| 30.5 J/TH | Efficiency | 30.0 J/TH |
| 75 dB | Noise Level | 30 dB |
| 13.2 kg | Weight | 0.2 kg |
| 10,407 BTU/hr | BTU Output | 51 BTU/hr |
| 84/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Antminer S19j Pro
PiAxe
Based on BTC price of $79,269 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the PiAxe wins on 3 of 6 factors (efficiency, power consumption, noise level). Its biggest concrete edge: 100% better power draw (3,050.0 vs 15.0 W). That said, the Antminer S19j Pro isn't beaten everywhere — it still wins hashrate and home mining score 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 S19j Pro and PiAxe actually differ, with the gap quantified:
- Antminer S19j Pro 19900% more hashrate (100.0 vs 0.5 TH/s)
- PiAxe 100% better power draw (3,050.0 vs 15.0 W)
- PiAxe 2% better efficiency (30.5 vs 30.0 J/TH)
- PiAxe 60% better noise (75.0 vs 30.0 dB)
- PiAxe 98% better weight (13.2 vs 0.2 kg)
- Antminer S19j Pro 20225% more heat output (10,406.6 vs 51.2 BTU/hr)
- Antminer S19j Pro 20% more home mining score (84.0 vs 70.0)
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 S19j Pro | Metric | PiAxe |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | $79 |
| -$3.67 | Daily net profit | -$0.02 |
| -$3,840 | Net after 1 year | -$85 |
| -$5,181 | Net after 2 years | -$92 |
| -$6,521 | Net after 3 years | -$98 |
| 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
Antminer S19j ProScore: 84/100. 75 dB noise level.
Best for Efficiency
PiAxe30.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S19j Pro vs PiAxe: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the PiAxe is more profitable at $-0.02/day compared to $-3.67/day for the Antminer S19j Pro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S19j Pro vs PiAxe: which runs at a lower noise level?
The PiAxe is quieter at 30 dB compared to the Antminer S19j Pro at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer S19j Pro or the PiAxe?
The Antminer S19j Pro scores 84/100 on our Home Mining Score (vs 70/100 for the PiAxe). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Antminer S19j Pro and PiAxe?
The Antminer S19j Pro runs at 30.5 J/TH while the PiAxe runs at 30.0 J/TH — a difference of 0.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 2% better efficiency (30.5 vs 30.0 J/TH).