Antminer S21 vs Canaan Avalon A1566HA
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 | Specification | Canaan Avalon A1566HA |
|---|---|---|
| 200.0 TH/s | Taux de hachage | 460.0 TH/s |
| 3,500 W | Consommation électrique | 8,188 W |
| 17.5 J/TH | Efficiency | 17.8 J/TH |
| 75 dB | Niveau de bruit | 80 dB |
| 14.6 kg | Weight | 20.0 kg |
| 11,942 BTU/hr | BTU Output | 27,938 BTU/hr |
| 36/100 | Home Mining Score | 23/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Antminer S21
Canaan Avalon A1566HA
Based on BTC price of $78,204 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21, which leads on 4 of 6 weighted factors (efficacité, consommation électrique, score de minage domestique, niveau sonore). Where it pulls away hardest is 57% better power draw (3,500 vs 8,188 W). 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
The Antminer S21 and Canaan Avalon A1566HA diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Canaan Avalon A1566HA 130% more hashrate (200 vs 460 TH/s)
- Antminer S21 57% better power draw (3,500 vs 8,188 W)
- Antminer S21 2% better efficacité (17.5 vs 17.8 J/TH)
- Antminer S21 6% better noise (75.0 vs 80.0 dB)
- Antminer S21 27% better weight (14.6 vs 20.0 kg)
- Canaan Avalon A1566HA 134% more heat output (11,942 vs 27,938 BTU/hr)
- Antminer S21 57% more score de minage domestique (36.0 vs 23.0)
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 S21 | Metric | Canaan Avalon A1566HA |
|---|---|---|
| $5,500 | Upfront cost (MSRP) | $5,074 |
| -$1.20 | Daily net profit | -$3.10 |
| -$5,939 | Net after 1 year | -$6,204 |
| -$6,378 | Net after 2 years | -$7,335 |
| -$6,817 | Net after 3 years | -$8,465 |
| 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 S21Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer S21 vs Canaan Avalon A1566HA: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 is more profitable at $-1.20/day compared to $-3.10/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 vs Canaan Avalon A1566HA: which runs at a lower noise level?
The Antminer S21 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 or Canaan Avalon A1566HA?
The Antminer S21 scores 36/100 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 vs Canaan Avalon A1566HA: how much does the efficiency gap matter?
The Antminer S21 runs at 17.5 J/TH while the Canaan Avalon A1566HA runs at 17.8 J/TH — a difference of 0.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 2% better efficacité (17.5 vs 17.8 J/TH).