X4 vs Whatsminer M21
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1200 W | 1860 W | |
| Release | 2021-11 | 2019-08 | |
| Best opportunity |  QKCNetwork |  BTCNetwork | |
| Profit/day | $0.16 | $-2.29 | |
| Score | 62/100 | 49/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.