Antminer S9 (12.5TH/s) vs SealMiner A2 Pro Air (255TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
Antminer S9 (12.5TH/s)
Option 2
SealMiner A2 Pro Air (255TH/s)
SealMiner A2 Pro Air (255TH/s) leads this comparison
SealMiner A2 Pro Air (255TH/s) comes out ahead on more buyer-facing signals here. Antminer S9 (12.5TH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.
Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.
Technical comparison
Side-by-side mining, operating, and commercial specs.
| Feature | Antminer S9 (12.5TH/s) | SealMiner A2 Pro Air (255TH/s) | Advantage |
|---|---|---|---|
| Brand | Antminer | SealMiner | Contextual |
| Model | S9 | A2 | Contextual |
| Hashrate | 12.5 TH/s | 255 TH/s Best | SealMiner A2 Pro Air (255TH/s) |
| Power Consumption | 1225W Best | 3790W | Antminer S9 (12.5TH/s) |
| Efficiency | 98.00 J/TH | 14.86 J/TH Best | SealMiner A2 Pro Air (255TH/s) |
| Daily energy use | 29.4 kWh Best | 91.0 kWh | Antminer S9 (12.5TH/s) |
| Net Daily Profit (Est.) | -$1.37 | $2.56 Best | SealMiner A2 Pro Air (255TH/s) |
| Monthly Profit (Est.) | -$41.22 | $76.87 Best | SealMiner A2 Pro Air (255TH/s) |
| Price | N/A | $3,008.29 | Contextual |
| Estimated ROI | N/A | 39 mo | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 135 x 350 x 158 mm | N/A | Contextual |
| Weight | 4200 g Best | 17000 g | Antminer S9 (12.5TH/s) |
Performance
SealMiner A2 Pro Air (255TH/s) has the hashrate edge for raw output potential.
Efficiency
SealMiner A2 Pro Air (255TH/s) is stronger when comparing joules per hash unit.
Buying decision
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Frequently asked questions
Which is more powerful: Antminer S9 (12.5TH/s) or SealMiner A2 Pro Air (255TH/s)?
SealMiner A2 Pro Air (255TH/s) has a higher hashrate of 255 TH/s compared to Antminer S9 (12.5TH/s)'s 12.5 TH/s.
Is Antminer S9 (12.5TH/s) more efficient than SealMiner A2 Pro Air (255TH/s)?
SealMiner A2 Pro Air (255TH/s) is more energy efficient at 14.86 J/TH.
Which miner has the better estimated ROI?
Estimated ROI is not available because one of the miners is missing current pricing or profit data.
Every Day You Wait is Revenue You Lose
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