Bitmain Antminer S21 official reference vs Canaan AvalonMiner A1566 207T air-cooled OEM reference
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Bitmain Antminer S21 official reference is the stronger pick — Better efficiency and stronger aftermarket ecosystem. The Bitmain Antminer S21 official reference runs 200.0 TH/s at 17.5 J/TH; the Canaan AvalonMiner A1566 207T air-cooled OEM reference runs —.
Specs verified against the D-Central Mining Bible \xc2\xb7 October 2026
Specifications Comparison
| Bitmain Antminer S21 official reference | Specification | Canaan AvalonMiner A1566 207T air-cooled OEM reference |
|---|---|---|
| 200.0 TH/s | Hashrate | — |
| 3,500 W | Power Consumption | — |
| 17.5 J/TH | Efficiency | — |
| — | Noise Level | — |
| 15.4 kg | Weight | 14.9 kg |
| 11,942 BTU/hr | BTU Output | — |
| — | Home Mining Score | — |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Canaan |
Profitability Comparison
Bitmain Antminer S21 official reference
Canaan AvalonMiner A1566 207T air-cooled OEM reference
Based on BTC price of $121,271 and current network difficulty as of Oct 4, 2026. Actual results vary.
Verdict
Bitmain's flagship versus Canaan's competitive entry. The Avalon A1566 represents Canaan's push into high-efficiency SHA-256 mining against the dominant S21.
The S21 holds a slight efficiency edge and benefits from Bitmain's dominant market position, which translates to better resale value and parts availability. The Avalon A1566 is a solid alternative, often available when S21 stock is limited.
Spec Deltas
Here is every spec where the Bitmain Antminer S21 official reference and Canaan AvalonMiner A1566 207T air-cooled OEM reference actually differ, with the gap quantified:
- Canaan AvalonMiner A1566 207T air-cooled OEM reference 3% better weight (15.4 vs 14.9 kg)
Best For...
Best for Profitability
Bitmain Antminer S21 official reference$3.09/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S21 official referenceBoth miners have comparable efficiency.
Frequently Asked Questions
Is Canaan a reliable ASIC manufacturer?
Yes. Canaan is a publicly traded company and one of the three major ASIC manufacturers. Their Avalon miners are used in large-scale operations worldwide.
Can D-Central repair Avalon miners?
Yes. D-Central provides repair services for Canaan Avalon miners, including the A1566 and other models.
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