Bitmain Antminer A3 (815Gh) vs Antminer D9
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer A3 (815Gh) | Specification | Antminer D9 |
|---|---|---|
| 815.0 GH/s | Hashrate | 1,770.0 GH/s |
| 1,275 W | Power Consumption | 2,839 W |
| 1,564.4 J/TH | Efficiency | 1,604.0 J/TH |
| — | Noise Level | 75 dB |
| 4,200.0 kg | Weight | 16.1 kg |
| 4,350 BTU/hr | BTU Output | 9,687 BTU/hr |
| 31/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| Blake2b | Algorithm | X11 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer A3 (815Gh)
Antminer D9
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 2% better efficiency at 1,564.4 J/TH compared to the Antminer D9 at 1,604.0 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 D9Score: 36/100. 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 D9 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 $-6.76/day for the Antminer D9. 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 D9?
The Antminer D9 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 D9?
The Antminer D9 scores 36/100 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 D9?
The Bitmain Antminer A3 (815Gh) runs at 1,564.4 J/TH while the Antminer D9 runs at 1,604.0 J/TH — a difference of 39.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.