SealMiner A2 Pro Air (255TH/s) vs Antminer S21 XP Hydro (473TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
SealMiner A2 Pro Air (255TH/s)
Option 2
Antminer S21 XP Hydro (473TH/s)
Antminer S21 XP Hydro (473TH/s) leads this comparison
Antminer S21 XP Hydro (473TH/s) comes out ahead on more buyer-facing signals here. SealMiner A2 Pro Air (255TH/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 | SealMiner A2 Pro Air (255TH/s) | Antminer S21 XP Hydro (473TH/s) | Advantage |
|---|---|---|---|
| Brand | SealMiner | Antminer | Contextual |
| Model | A2 | S21 | Contextual |
| Hashrate | 255 TH/s | 473 TH/s Best | Antminer S21 XP Hydro (473TH/s) |
| Power Consumption | 3790W Best | 5676W | SealMiner A2 Pro Air (255TH/s) |
| Efficiency | 14.86 J/TH | 12.00 J/TH Best | Antminer S21 XP Hydro (473TH/s) |
| Daily energy use | 91.0 kWh Best | 136.2 kWh | SealMiner A2 Pro Air (255TH/s) |
| Net Daily Profit (Est.) | $2.54 | $6.78 Best | Antminer S21 XP Hydro (473TH/s) |
| Monthly Profit (Est.) | $76.27 | $203.30 Best | Antminer S21 XP Hydro (473TH/s) |
| Price | $3,008.29 Best | $6,156.92 | SealMiner A2 Pro Air (255TH/s) |
| Estimated ROI | 39 mo | 30 mo Best | Antminer S21 XP Hydro (473TH/s) |
| Cooling | AIR | HYDRO | Contextual |
| Dimensions | N/A | 410 x 209 x 170 mm | Contextual |
| Weight | 17000 g | 17000 g | Tie |
Performance
Antminer S21 XP Hydro (473TH/s) has the hashrate edge for raw output potential.
Efficiency
Antminer S21 XP Hydro (473TH/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: SealMiner A2 Pro Air (255TH/s) or Antminer S21 XP Hydro (473TH/s)?
Antminer S21 XP Hydro (473TH/s) has a higher hashrate of 473 TH/s compared to SealMiner A2 Pro Air (255TH/s)'s 255 TH/s.
Is SealMiner A2 Pro Air (255TH/s) more efficient than Antminer S21 XP Hydro (473TH/s)?
Antminer S21 XP Hydro (473TH/s) is more energy efficient at 12.00 J/TH.
Which miner has the better estimated ROI?
Antminer S21 XP Hydro (473TH/s) has the stronger estimated payback period at 30 mo, based on current product pricing and $0.060/kWh hosted electricity.
Every Day You Wait is Revenue You Lose
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