STU-U2 vs SealMiner A3 Air
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1600 W | 3640 W | |
| Release | 2018-10 | 2025-09 | |
| Best opportunity |  SCNetwork |  BTCNetwork | |
| Profit/day | $0.71 | $4.03 | |
| Score | 48/100 | 74/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | STU-U2 | SealMiner A3 Air | |
|---|---|---|---|
| Blake (2b) | 7 TH/s1600 W · 4.375 GH/s/W | not supported | |
| SHA-256 | not supported | 260 TH/s3640 W · 71.43 GH/s/W |