Bitmain Antminer A3 (815Gh) vs StrongU STU-U2
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer A3 (815Gh) | Specification | StrongU STU-U2 |
|---|---|---|
| 815.0 GH/s | Hashrate | 7.0 TH/s |
| 1,275 W | Power Consumption | 1,600 W |
| 1,564.4 J/TH | Efficiency | 228.6 J/TH |
| — | Noise Level | — |
| 4,200.0 kg | Weight | 6,500.0 kg |
| 4,350 BTU/hr | BTU Output | 5,459 BTU/hr |
| 31/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| Blake2b | Algorithm | Blake2b |
| Bitmain | Manufacturer | StrongU |
Profitability Comparison
Bitmain Antminer A3 (815Gh)
StrongU STU-U2
Based on BTC price of $68,097 and current network difficulty as of Apr 5, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the StrongU STU-U2 wins on 3 of 5 factors (efficiency, hashrate, price-performance). The Bitmain Antminer A3 (815Gh) holds the edge in power consumption and home mining score. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Bitmain Antminer A3 (815Gh)Score: 31/100. 0 dB noise level.
Best for Efficiency
StrongU STU-U2228.6 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer A3 (815Gh) or StrongU STU-U2 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 $-3.62/day for the StrongU STU-U2. 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 StrongU STU-U2?
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 StrongU STU-U2?
The Bitmain Antminer A3 (815Gh) scores 31/100 on our Home Mining Score (vs 28/100 for the StrongU STU-U2). 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 StrongU STU-U2?
The Bitmain Antminer A3 (815Gh) runs at 1,564.4 J/TH while the StrongU STU-U2 runs at 228.6 J/TH — a difference of 1,335.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.