Bitmain Antminer S21 Immersion (227Th)

Taux de hachage 227.0 TH/s Puissance 3,623 W Efficiency 16.0 J/TH

Bitdeer SealMiner A3 Hydro

Taux de hachage 500.0 TH/s Puissance 6,750 W Efficiency 13.5 J/TH

Bitmain Antminer S21 Immersion (227Th) vs Bitdeer SealMiner A3 Hydro

Side-by-side specs, profitability, and home mining comparison.

Specifications Comparison

Bitmain Antminer S21 Immersion (227Th)	Specification	Bitdeer SealMiner A3 Hydro
227.0 TH/s	Taux de hachage	500.0 TH/s
3,623 W	Consommation électrique	6,750 W
16.0 J/TH	Efficiency	13.5 J/TH
75 dB	Niveau de bruit	50 dB
17.2 kg	Weight	20.5 kg
12,362 BTU/hr	BTU Output	23,031 BTU/hr
30/100	Home Mining Score	44/100
—	Release Year	—
SHA-256	Algorithme	SHA-256
Bitmain	Manufacturer	Bitdeer

Profitability Comparison

Electricity Rate:

$/kWh

Bitmain Antminer S21 Immersion (227Th)

Daily Revenue 0.00009839 BTC $7.25

Daily Electricity -$8.70

Daily Profit -$1.44

Monthly -$43.24

Yearly -$526.13

Bitdeer SealMiner A3 Hydro

Daily Revenue 0.00021671 BTC $15.98

Daily Electricity -$16.20

Daily Profit -$0.22

Monthly -$6.68

Yearly -$81.25

Based on BTC price of $73,727 and current network difficulty as of Mar 17, 2026. Actual results vary.

Verdict

Selon notre analyse multifactorielle, le Bitdeer SealMiner A3 Hydro l'emporte sur 5 des 6 facteurs (efficacité, hashrate, score de minage domestique, niveau sonore, rapport qualité-prix). Le Bitmain Antminer S21 Immersion (227Th) 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.

Winner: Bitdeer SealMiner A3 Hydro — l'emporte sur 5 des 6 facteurs

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Bitdeer SealMiner A3 Hydro

Score: 44/100. 50 dB noise level.

Best for Efficiency

Bitdeer SealMiner A3 Hydro

13.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer S21 Immersion (227Th) or Bitdeer SealMiner A3 Hydro more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Hydro is more profitable at $-0.22/day compared to $-1.44/day for the Bitmain Antminer S21 Immersion (227Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer S21 Immersion (227Th) or Bitdeer SealMiner A3 Hydro?

The Bitdeer SealMiner A3 Hydro is quieter at 50 dB compared to the Bitmain Antminer S21 Immersion (227Th) at 75 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Bitmain Antminer S21 Immersion (227Th) or Bitdeer SealMiner A3 Hydro?

The Bitdeer SealMiner A3 Hydro scores 44/100 on our Home Mining Score (vs 30/100 for the Bitmain Antminer S21 Immersion (227Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

What is the efficiency difference between Bitmain Antminer S21 Immersion (227Th) and Bitdeer SealMiner A3 Hydro?

The Bitmain Antminer S21 Immersion (227Th) runs at 16.0 J/TH while the Bitdeer SealMiner A3 Hydro runs at 13.5 J/TH — a difference of 2.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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