B7 vs A21
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 530 W | 1800 W | |
| Release | 2019-02 | 2025-01 | |
| Best opportunity |  NEXANetwork | ||
| Profit/day | $4.04 | ||
| Score | 66/100 | ||
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.