Bitmain Antminer S21+ Hyd vs Canaan Avalon A1566I
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd | Specification | Canaan Avalon A1566I |
|---|---|---|
| 319.0 TH/s | Taux de hachage | 249.0 TH/s |
| 4,785 W | Consommation électrique | 4,500 W |
| 15.0 J/TH | Efficiency | 18.1 J/TH |
| 50 dB | Niveau de bruit | 50 dB |
| 17.5 kg | Weight | 11.3 kg |
| 16,326 BTU/hr | BTU Output | 15,354 BTU/hr |
| 44/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Bitmain Antminer S21+ Hyd
Canaan Avalon A1566I
Based on BTC price of $78,183 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Bitmain Antminer S21+ Hyd l'emporte sur 3 des 4 facteurs (efficacité, hashrate, rapport qualité-prix). Where it pulls away hardest is 28% more hashrate (319 vs 249 TH/s). That said, the Canaan Avalon A1566I isn't beaten everywhere — it still wins consommation électrique. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer S21+ Hyd and Canaan Avalon A1566I actually differ, with the gap quantified:
- Bitmain Antminer S21+ Hyd 28% more hashrate (319 vs 249 TH/s)
- Canaan Avalon A1566I 6% better power draw (4,785 vs 4,500 W)
- Bitmain Antminer S21+ Hyd 17% better efficacité (15.0 vs 18.1 J/TH)
- Canaan Avalon A1566I 35% better weight (17.5 vs 11.3 kg)
- Bitmain Antminer S21+ Hyd 6% more heat output (16,326 vs 15,354 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.
| Bitmain Antminer S21+ Hyd | Metric | Canaan Avalon A1566I |
|---|---|---|
| $2,499 | Upfront cost (MSRP) | $2,710 |
| -$0.01 | Daily net profit | -$1.84 |
| -$2,502 | Net after 1 year | -$3,382 |
| -$2,504 | Net after 2 years | -$4,054 |
| -$2,507 | Net after 3 years | -$4,726 |
| 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
Bitmain Antminer S21+ Hyd15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21+ Hyd or Canaan Avalon A1566I more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21+ Hyd is more profitable at $-0.01/day compared to $-1.84/day for the Canaan Avalon A1566I. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S21+ Hyd vs Canaan Avalon A1566I: which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Bitmain Antminer S21+ Hyd or the Canaan Avalon A1566I?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Bitmain Antminer S21+ Hyd and Canaan Avalon A1566I?
The Bitmain Antminer S21+ Hyd runs at 15.0 J/TH while the Canaan Avalon A1566I runs at 18.1 J/TH — a difference of 3.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 17% better efficacité (15.0 vs 18.1 J/TH).