SealMiner A3 Air vs U2
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 3640 W | 1600 W | |
| Release | 2025-09 | 2018-09 | |
| Best opportunity |  BTCNetwork |  SCNetwork | |
| Profit/day | $3.94 | $2.65 | |
| Score | 74/100 | 55/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | SealMiner A3 Air | U2 | |
|---|---|---|---|
| Blake (2b) | not supported | 5.5 TH/s1600 W · 3.438 GH/s/W | |
| SHA-256 | 260 TH/s3640 W · 71.43 GH/s/W | not supported |