Antminer S21 Hydro

Hashrate 335.0 TH/s Power 5,360 W Efficiency 16.0 J/TH

Auradine Teraflux AI3680

Hashrate 375.0 TH/s Power 5,625 W Efficiency 15.0 J/TH

Antminer S21 Hydro vs Auradine Teraflux AI3680

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

Specifications Comparison

Antminer S21 Hydro	Specification	Auradine Teraflux AI3680
335.0 TH/s	Hashrate	375.0 TH/s
5,360 W	Power Consumption	5,625 W
16.0 J/TH	Efficiency	15.0 J/TH
50 dB	Noise Level	55 dB
15.8 kg	Weight	—
18,288 BTU/hr	BTU Output	19,193 BTU/hr
44/100	Home Mining Score	—
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Auradine

Profitability Comparison

Electricity Rate:

$/kWh

Antminer S21 Hydro

Daily Revenue 0.00014520 BTC $10.22

Daily Electricity -$12.86

Daily Profit -$2.64

Monthly -$79.29

Yearly -$964.67

Auradine Teraflux AI3680

Daily Revenue 0.00016253 BTC $11.44

Daily Electricity -$13.50

Daily Profit -$2.06

Monthly -$61.76

Yearly -$751.35

Based on BTC price of $70,395 and current network difficulty as of Mar 19, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Auradine Teraflux AI3680 wins on 2 of 5 factors (efficiency, hashrate). The Antminer S21 Hydro holds the edge in power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.

Winner: Auradine Teraflux AI3680 — wins on 3 of 5 factors

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Antminer S21 Hydro

Score: 44/100. 50 dB noise level.

Best for Efficiency

Auradine Teraflux AI3680

15.0 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Antminer S21 Hydro or Auradine Teraflux AI3680 more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Auradine Teraflux AI3680 is more profitable at $-2.06/day compared to $-2.64/day for the Antminer S21 Hydro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Antminer S21 Hydro or Auradine Teraflux AI3680?

The Antminer S21 Hydro is quieter at 50 dB compared to the Auradine Teraflux AI3680 at 55 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Antminer S21 Hydro or Auradine Teraflux AI3680?

The Antminer S21 Hydro scores 44/100 on our Home Mining Score (vs 0/100 for the Auradine Teraflux AI3680). 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 Antminer S21 Hydro and Auradine Teraflux AI3680?

The Antminer S21 Hydro runs at 16.0 J/TH while the Auradine Teraflux AI3680 runs at 15.0 J/TH — a difference of 1.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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