Bitmain Antminer A3 (815Gh) vs Antminer E9 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer A3 (815Gh) | Specification | Antminer E9 Pro |
|---|---|---|
| 815.0 GH/s | Hashrate | 3,680.0 MH/s |
| 1,275 W | Power Consumption | 2,200 W |
| 1,564.4 J/TH | Efficiency | 597,826.1 J/TH |
| — | Noise Level | 75 dB |
| 4,200.0 kg | Weight | 14.2 kg |
| 4,350 BTU/hr | BTU Output | 7,506 BTU/hr |
| 31/100 | Home Mining Score | 40/100 |
| — | Release Year | — |
| Blake2b | Algorithm | EtHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer A3 (815Gh)
Antminer E9 Pro
Based on BTC price of $74,306 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Based on specs, the Bitmain Antminer A3 (815Gh) offers 100% better efficiency at 1,564.4 J/TH compared to the Antminer E9 Pro at 597,826.1 J/TH. This directly impacts daily operating costs and long-term profitability.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer E9 ProScore: 40/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer A3 (815Gh)1,564.4 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer A3 (815Gh) or Antminer E9 Pro 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 $-5.28/day for the Antminer E9 Pro. 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 Antminer E9 Pro?
The Antminer E9 Pro is quieter at 75 dB compared to the Bitmain Antminer A3 (815Gh) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer A3 (815Gh) or Antminer E9 Pro?
The Antminer E9 Pro scores 40/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer A3 (815Gh)). 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 A3 (815Gh) and Antminer E9 Pro?
The Bitmain Antminer A3 (815Gh) runs at 1,564.4 J/TH while the Antminer E9 Pro runs at 597,826.1 J/TH — a difference of 596,261.7 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.