Antminer S21 Hydro

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

Innosilicon T3 43T

Hashrate 43.0 TH/s Power 2,100 W Efficiency 48.8 J/TH

Antminer S21 Hydro vs Innosilicon T3 43T

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

Specifications Comparison

Antminer S21 Hydro	Specification	Innosilicon T3 43T
335.0 TH/s	Hashrate	43.0 TH/s
5,360 W	Power Consumption	2,100 W
16.0 J/TH	Efficiency	48.8 J/TH
50 dB	Noise Level	—
15.8 kg	Weight	10,000.0 kg
18,288 BTU/hr	BTU Output	7,165 BTU/hr
44/100	Home Mining Score	26/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Innosilicon

Profitability Comparison

Electricity Rate:

$/kWh

Antminer S21 Hydro

Daily Revenue 0.00014520 BTC $10.36

Daily Electricity -$12.86

Daily Profit -$2.51

Monthly -$75.25

Yearly -$915.54

Innosilicon T3 43T

Daily Revenue 0.00001864 BTC $1.33

Daily Electricity -$5.04

Daily Profit -$3.71

Monthly -$111.32

Yearly -$1,354.43

Based on BTC price of $71,322 and current network difficulty as of Mar 25, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Antminer S21 Hydro wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). The Innosilicon T3 43T holds the edge in power consumption. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.

Winner: Antminer S21 Hydro — wins on 5 of 6 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

Antminer S21 Hydro

16.0 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Antminer S21 Hydro or Innosilicon T3 43T more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Hydro is more profitable at $-2.51/day compared to $-3.71/day for the Innosilicon T3 43T. 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 Innosilicon T3 43T?

The Antminer S21 Hydro is quieter at 50 dB compared to the Innosilicon T3 43T at 0 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Antminer S21 Hydro or Innosilicon T3 43T?

The Antminer S21 Hydro scores 44/100 on our Home Mining Score (vs 26/100 for the Innosilicon T3 43T). 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 Innosilicon T3 43T?

The Antminer S21 Hydro runs at 16.0 J/TH while the Innosilicon T3 43T runs at 48.8 J/TH — a difference of 32.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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