Antminer S21+ vs Bitdeer SealMiner A3 Pro Air
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21+ | Specification | Bitdeer SealMiner A3 Pro Air |
|---|---|---|
| 216.0 TH/s | Taux de hachage | 290.0 TH/s |
| 3,564 W | Consommation électrique | 3,625 W |
| 16.5 J/TH | Efficiency | 12.5 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 15.0 kg | Weight | 15.5 kg |
| 12,160 BTU/hr | BTU Output | 12,369 BTU/hr |
| 30/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Antminer S21+
Bitdeer SealMiner A3 Pro Air
Based on BTC price of $74,363 and current network difficulty as of Mar 17, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Bitdeer SealMiner A3 Pro Air l'emporte sur 3 des 4 facteurs (efficacité, hashrate, rapport qualité-prix). Le Antminer S21+ a l'avantage en consommation électrique. Consultez les spécifications détaillées et les calculs de rentabilité ci-dessus pour déterminer quel mineur convient le mieux à votre installation.
Best For...
Best for Profitability
Bitdeer SealMiner A3 Pro Air$2.24/day higher profit at current rates.
Best for Home Mining
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitdeer SealMiner A3 Pro Air12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21+ or Bitdeer SealMiner A3 Pro Air more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Pro Air is more profitable at $0.65/day compared to $-1.59/day for the Antminer S21+. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21+ or Bitdeer SealMiner A3 Pro Air?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer S21+ or Bitdeer SealMiner A3 Pro Air?
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 Antminer S21+ and Bitdeer SealMiner A3 Pro Air?
The Antminer S21+ runs at 16.5 J/TH while the Bitdeer SealMiner A3 Pro Air runs at 12.5 J/TH — a difference of 4.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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