STU-U6 (440GH/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
STU-U6 (440GH/s)
Option 2
SealMiner A2 Pro Air (255TH/s)
STU-U6 (440GH/s) leads this comparison
STU-U6 (440GH/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 | STU-U6 (440GH/s) | SealMiner A2 Pro Air (255TH/s) | Advantage |
|---|---|---|---|
| Brand | StrongU | SealMiner | Contextual |
| Model | STU | A2 | Contextual |
| Hashrate | 440 GH/s | 255 TH/s Best | SealMiner A2 Pro Air (255TH/s) |
| Power Consumption | 2200W Best | 3790W | STU-U6 (440GH/s) |
| Efficiency | 5.00 J/GH Best | 14.86 J/TH | STU-U6 (440GH/s) |
| Daily energy use | 52.8 kWh Best | 91.0 kWh | STU-U6 (440GH/s) |
| Net Daily Profit (Est.) | -$1.63 | $2.54 Best | SealMiner A2 Pro Air (255TH/s) |
| Monthly Profit (Est.) | -$48.84 | $76.27 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 370 x 208 mm | N/A | Contextual |
| Weight | 7200 g Best | 17000 g | STU-U6 (440GH/s) |
Performance
SealMiner A2 Pro Air (255TH/s) has the hashrate edge for raw output potential.
Efficiency
STU-U6 (440GH/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: STU-U6 (440GH/s) or SealMiner A2 Pro Air (255TH/s)?
SealMiner A2 Pro Air (255TH/s) has a higher hashrate of 255 TH/s compared to STU-U6 (440GH/s)'s 440 GH/s.
Is STU-U6 (440GH/s) more efficient than SealMiner A2 Pro Air (255TH/s)?
Yes, STU-U6 (440GH/s) is more energy efficient at 5.00 J/GH.
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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