Antminer S21 Pro vs Canaan Avalon A1566HA
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 Pro | Specification | Canaan Avalon A1566HA |
|---|---|---|
| 234.0 TH/s | Taux de hachage | 460.0 TH/s |
| 3,510 W | Consommation électrique | 8,188 W |
| 15.0 J/TH | Efficiency | 17.8 J/TH |
| 75 dB | Niveau de bruit | 80 dB |
| 15.0 kg | Weight | 20.0 kg |
| 11,976 BTU/hr | BTU Output | 27,938 BTU/hr |
| 30/100 | Home Mining Score | 23/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21 Pro
Canaan Avalon A1566HA
Based on BTC price of $62,980 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Antminer S21 Pro comes out ahead — it takes 4 of 6 (efficacité, consommation électrique, score de minage domestique, niveau sonore). The standout gap is 57% better power draw (3,510 vs 8,188 W) in the Antminer S21 Pro's favour. That said, the Canaan Avalon A1566HA isn't beaten everywhere — it still wins hashrate and rapport qualité-prix. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer S21 Pro and Canaan Avalon A1566HA sit on each measurable spec:
- Canaan Avalon A1566HA 97% more hashrate (234 vs 460 TH/s)
- Antminer S21 Pro 57% better power draw (3,510 vs 8,188 W)
- Antminer S21 Pro 16% better efficacité (15.0 vs 17.8 J/TH)
- Antminer S21 Pro 6% better noise (75.0 vs 80.0 dB)
- Antminer S21 Pro 25% better weight (15.0 vs 20.0 kg)
- Canaan Avalon A1566HA 133% more heat output (11,976 vs 27,938 BTU/hr)
- Antminer S21 Pro 30% more score de minage domestique (30.0 vs 23.0)
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.
| Antminer S21 Pro | Metric | Canaan Avalon A1566HA |
|---|---|---|
| $6,800 | Upfront cost (MSRP) | $5,074 |
| -$1.76 | Daily net profit | -$6.54 |
| -$7,441 | Net after 1 year | -$7,463 |
| -$8,082 | Net after 2 years | -$9,852 |
| -$8,724 | Net after 3 years | -$12,240 |
| 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 S21 ProScore: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21 Pro or the Canaan Avalon A1566HA?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $-1.76/day compared to $-6.54/day for the Canaan Avalon A1566HA. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S21 Pro vs Canaan Avalon A1566HA: which runs at a lower noise level?
The Antminer S21 Pro is quieter at 75 dB compared to the Canaan Avalon A1566HA at 80 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S21 Pro or Canaan Avalon A1566HA?
The Antminer S21 Pro scores 30/100 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.
Antminer S21 Pro vs Canaan Avalon A1566HA: how much does the efficiency gap matter?
The Antminer S21 Pro runs at 15.0 J/TH while the Canaan Avalon A1566HA runs at 17.8 J/TH — a difference of 2.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 16% better efficacité (15.0 vs 17.8 J/TH).