Antminer S19j vs Avalon A1246
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j | Specification | Avalon A1246 |
|---|---|---|
| 90.0 TH/s | Hashrate | 90.0 TH/s |
| 3,100 W | Power Consumption | 3,420 W |
| 34.4 J/TH | Efficiency | 38.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 13.0 kg | Weight | 12.3 kg |
| 10,577 BTU/hr | BTU Output | 11,669 BTU/hr |
| 84/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S19j
Avalon A1246
Based on BTC price of $79,195 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S19j, which leads on 3 of 4 weighted factors (efficiency, power consumption, home mining score). The standout gap is 9% better efficiency (34.4 vs 38.0 J/TH) in the Antminer S19j's favour. The Avalon A1246 claws back ground on price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Here is every spec where the Antminer S19j and Avalon A1246 actually differ, with the gap quantified:
- Antminer S19j 9% better power draw (3,100 vs 3,420 W)
- Antminer S19j 9% better efficiency (34.4 vs 38.0 J/TH)
- Avalon A1246 5% better weight (13.0 vs 12.3 kg)
- Avalon A1246 10% more heat output (10,577 vs 11,669 BTU/hr)
- Antminer S19j 133% more home mining score (84.0 vs 36.0)
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 | Metric | Avalon A1246 |
|---|---|---|
| $2,000 | Upfront cost (MSRP) | $1,800 |
| -$4.06 | Daily net profit | -$4.83 |
| -$3,481 | Net after 1 year | -$3,561 |
| -$4,962 | Net after 2 years | -$5,323 |
| -$6,443 | Net after 3 years | -$7,084 |
| 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 S19jScore: 84/100. 75 dB noise level.
Best for Efficiency
Antminer S19j34.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S19j or Avalon A1246 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S19j is more profitable at $-4.06/day compared to $-4.83/day for the Avalon A1246. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S19j vs Avalon A1246: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Antminer S19j vs Avalon A1246: which fits a residential setup better?
The Antminer S19j scores 84/100 on our Home Mining Score (vs 36/100 for the Avalon A1246). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S19j and Avalon A1246 on J/TH?
The Antminer S19j runs at 34.4 J/TH while the Avalon A1246 runs at 38.0 J/TH — a difference of 3.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 9% better efficiency (34.4 vs 38.0 J/TH).