Avalon A1566 vs Bitmain S19k Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Avalon A1566 | Specification | Bitmain S19k Pro |
|---|---|---|
| 185.0 TH/s | Hashrate | 120.0 TH/s |
| 3,420 W | Power Consumption | 2,760 W |
| 18.5 J/TH | Efficiency | 23.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.9 kg | Weight | 14.5 kg |
| 11,669 BTU/hr | BTU Output | 9,417 BTU/hr |
| 36/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Canaan | Manufacturer | Bitmain |
Profitability Comparison
Avalon A1566
Bitmain S19k Pro
Based on BTC price of $76,967 and current network difficulty as of May 18, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Avalon A1566 comes out ahead — it takes 2 of 4 (efficiency, hashrate). Where it pulls away hardest is 54% more hashrate (185 vs 120 TH/s). The Bitmain S19k Pro holds the edge in power consumption and price-performance. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Avalon A1566 and Bitmain S19k Pro actually differ, with the gap quantified:
- Avalon A1566 54% more hashrate (185 vs 120 TH/s)
- Bitmain S19k Pro 19% better power draw (3,420 vs 2,760 W)
- Avalon A1566 20% better efficiency (18.5 vs 23.0 J/TH)
- Bitmain S19k Pro 3% better weight (14.9 vs 14.5 kg)
- Avalon A1566 24% more heat output (11,669 vs 9,417 BTU/hr)
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.
| Avalon A1566 | Metric | Bitmain S19k Pro |
|---|---|---|
| $5,500 | Upfront cost (MSRP) | $313 |
| -$1.66 | Daily net profit | -$2.37 |
| -$6,104 | Net after 1 year | -$1,180 |
| -$6,709 | Net after 2 years | -$2,046 |
| -$7,313 | Net after 3 years | -$2,912 |
| 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
Avalon A156618.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Avalon A1566 or the Bitmain S19k Pro?
At the current BTC price and a $0.10/kWh electricity rate, the Avalon A1566 is more profitable at $-1.66/day compared to $-2.37/day for the Bitmain S19k Pro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Avalon A1566 or Bitmain S19k Pro?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Avalon A1566 or the Bitmain S19k Pro?
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 Avalon A1566 and Bitmain S19k Pro on J/TH?
The Avalon A1566 runs at 18.5 J/TH while the Bitmain S19k Pro runs at 23.0 J/TH — a difference of 4.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 20% better efficiency (18.5 vs 23.0 J/TH).