U2 vs SealMiner A4 Pro Air
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1600 W | 3662 W | |
| Release | 2018-09 | 2026-05 | |
| Best opportunity |  SCNetwork |  BTCNetwork | |
| Profit/day | $2.30 | $6.43 | |
| Score | 54/100 | 76/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | U2 | SealMiner A4 Pro Air | |
|---|---|---|---|
| Blake (2b) | 5.5 TH/s1600 W · 3.438 GH/s/W | not supported | |
| SHA-256 | not supported | 336 TH/s3662 W · 91.75 GH/s/W |