Antminer B3 (1Kh) vs Whatsminer M21
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 380 W | 1860 W | |
| Release | 2018-05 | 2019-08 | |
| Best opportunity |  BTCNetwork | ||
| Profit/day | $-2.31 | ||
| Score | 49/100 | ||
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.