Whatsminer M21 vs K7
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1860 W | 3080 W | |
| Release | 2019-08 | 2022-11 | |
| Best opportunity |  BCHNetwork |  CKBNetwork | |
| Profit/day | $-2.42 | $-1.94 | |
| Score | 49/100 | 57/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.