SealMiner A3 Air vs A21
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 3640 W | 1800 W | |
| Release | 2025-09 | 2025-01 | |
| Best opportunity |  BTCNetwork |  NEXNetwork | |
| Profit/day | $3.96 | $5.62 | |
| Score | 74/100 | 70/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.