Antminer S9i vs Bitdeer SealMiner A2 Pro Air
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S9i | Specification | Bitdeer SealMiner A2 Pro Air |
|---|---|---|
| 14.0 TH/s | Hashrate | 255.0 TH/s |
| 1,320 W | Power Consumption | 3,790 W |
| 94.3 J/TH | Efficiency | 14.9 J/TH |
| 76 dB | Noise Level | 75 dB |
| 4.2 kg | Weight | 15.5 kg |
| 4,504 BTU/hr | BTU Output | 12,932 BTU/hr |
| 83/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Antminer S9i
Bitdeer SealMiner A2 Pro Air
Based on BTC price of $74,178 and current network difficulty as of Mar 16, 2026. Actual results vary.
Verdict
Based on specs, the Bitdeer SealMiner A2 Pro Air offers 84% better efficiency at 14.9 J/TH compared to the Antminer S9i at 94.3 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 S9iScore: 83/100. 76 dB noise level.
Best for Efficiency
Bitdeer SealMiner A2 Pro Air14.9 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S9i or Bitdeer SealMiner A2 Pro Air more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 Pro Air is more profitable at $-0.90/day compared to $-2.72/day for the Antminer S9i. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S9i or Bitdeer SealMiner A2 Pro Air?
The Bitdeer SealMiner A2 Pro Air is quieter at 75 dB compared to the Antminer S9i at 76 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer S9i or Bitdeer SealMiner A2 Pro Air?
The Antminer S9i scores 83/100 on our Home Mining Score (vs 30/100 for the Bitdeer SealMiner A2 Pro Air). 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 S9i and Bitdeer SealMiner A2 Pro Air?
The Antminer S9i runs at 94.3 J/TH while the Bitdeer SealMiner A2 Pro Air runs at 14.9 J/TH — a difference of 79.4 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.
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