Bitmain Antminer A3 (815Gh)

Hashrate 815.0 GH/s Power 1,275 W Efficiency 1,564.4 J/TH

Innosilicon S11 SiaMaster

Hashrate 4.3 TH/s Power 1,350 W Efficiency 314.0 J/TH

Bitmain Antminer A3 (815Gh) vs Innosilicon S11 SiaMaster

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

Specifications Comparison

Bitmain Antminer A3 (815Gh)	Specification	Innosilicon S11 SiaMaster
815.0 GH/s	Hashrate	4.3 TH/s
1,275 W	Power Consumption	1,350 W
1,564.4 J/TH	Efficiency	314.0 J/TH
—	Noise Level	—
4,200.0 kg	Weight	3,700.0 kg
4,350 BTU/hr	BTU Output	4,606 BTU/hr
31/100	Home Mining Score	31/100
—	Release Year	—
Blake2b	Algorithm	Blake2b
Bitmain	Manufacturer	Innosilicon

Profitability Comparison

Electricity Rate:

$/kWh

Bitmain Antminer A3 (815Gh)

Daily Revenue 0.00000035 BTC $0.03

Daily Electricity -$3.06

Daily Profit -$3.03

Monthly -$91.01

Yearly -$1,107.34

Innosilicon S11 SiaMaster

Daily Revenue 0.00000186 BTC $0.14

Daily Electricity -$3.24

Daily Profit -$3.10

Monthly -$93.05

Yearly -$1,132.14

Based on BTC price of $74,178 and current network difficulty as of Mar 16, 2026. Actual results vary.

Verdict

Based on specs, the Innosilicon S11 SiaMaster offers 80% better efficiency at 314.0 J/TH compared to the Bitmain Antminer A3 (815Gh) at 1,564.4 J/TH. This directly impacts daily operating costs and long-term profitability.

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Tie

Both miners are equally suitable for home use.

Best for Efficiency

Innosilicon S11 SiaMaster

314.0 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer A3 (815Gh) or Innosilicon S11 SiaMaster more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer A3 (815Gh) is more profitable at $-3.03/day compared to $-3.10/day for the Innosilicon S11 SiaMaster. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer A3 (815Gh) or Innosilicon S11 SiaMaster?

Both miners have similar noise levels. Check the specs table above for exact decibel readings.

Which is better for home mining, the Bitmain Antminer A3 (815Gh) or Innosilicon S11 SiaMaster?

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 Bitmain Antminer A3 (815Gh) and Innosilicon S11 SiaMaster?

The Bitmain Antminer A3 (815Gh) runs at 1,564.4 J/TH while the Innosilicon S11 SiaMaster runs at 314.0 J/TH — a difference of 1,250.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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