Canaan Avalon A1566HA vs Canaan AvalonMiner 821
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Canaan Avalon A1566HA | Specification | Canaan AvalonMiner 821 |
|---|---|---|
| 460.0 TH/s | Hashrate | 11.5 TH/s |
| 8,188 W | Power Consumption | 1,200 W |
| 17.8 J/TH | Efficiency | 104.4 J/TH |
| 80 dB | Noise Level | — |
| 20.0 kg | Weight | 4,700.0 kg |
| 27,938 BTU/hr | BTU Output | 4,094 BTU/hr |
| 23/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Canaan | Manufacturer | Canaan |
Profitability Comparison
Canaan Avalon A1566HA
Canaan AvalonMiner 821
Based on BTC price of $79,084 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Canaan Avalon A1566HA edges it: 4 of 6 factors go its way (efficiency, hashrate, noise level, price-performance). The standout gap is 3900% more hashrate (460.0 vs 11.5 TH/s) in the Canaan Avalon A1566HA's favour. That said, the Canaan AvalonMiner 821 isn't beaten everywhere — it still wins power consumption and home mining score. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Canaan Avalon A1566HA and Canaan AvalonMiner 821 actually differ, with the gap quantified:
- Canaan Avalon A1566HA 3900% more hashrate (460.0 vs 11.5 TH/s)
- Canaan AvalonMiner 821 85% better power draw (8,188 vs 1,200 W)
- Canaan Avalon A1566HA 83% better efficiency (17.8 vs 104.4 J/TH)
- Canaan Avalon A1566HA 100% better weight (20.0 vs 4,700.0 kg)
- Canaan Avalon A1566HA 582% more heat output (27,938 vs 4,094 BTU/hr)
- Canaan AvalonMiner 821 35% more home mining score (23.0 vs 31.0)
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.
| Canaan Avalon A1566HA | Metric | Canaan AvalonMiner 821 |
|---|---|---|
| $5,074 | Upfront cost (MSRP) | $699 |
| -$2.91 | Daily net profit | -$2.46 |
| -$6,136 | Net after 1 year | -$1,597 |
| -$7,199 | Net after 2 years | -$2,496 |
| -$8,261 | Net after 3 years | -$3,394 |
| 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
Canaan AvalonMiner 821Score: 31/100. 0 dB noise level.
Best for Efficiency
Canaan Avalon A1566HA17.8 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Canaan Avalon A1566HA vs Canaan AvalonMiner 821: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Canaan AvalonMiner 821 is more profitable at $-2.46/day compared to $-2.91/day for the Canaan Avalon A1566HA. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Canaan Avalon A1566HA or Canaan AvalonMiner 821?
The Canaan Avalon A1566HA is quieter at 80 dB compared to the Canaan AvalonMiner 821 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Canaan Avalon A1566HA or Canaan AvalonMiner 821?
The Canaan AvalonMiner 821 scores 31/100 on our Home Mining Score (vs 23/100 for the Canaan Avalon A1566HA). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Canaan Avalon A1566HA vs Canaan AvalonMiner 821: how much does the efficiency gap matter?
The Canaan Avalon A1566HA runs at 17.8 J/TH while the Canaan AvalonMiner 821 runs at 104.4 J/TH — a difference of 86.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 83% better efficiency (17.8 vs 104.4 J/TH).