X4 Server (520 MH/s) vs S19j
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 240 W | 3100 W | |
| Release | 2021-11 | 2021-01 | |
| Best opportunity |  QKCNetwork |  BTCNetwork | |
| Profit/day | $0.13 | $-2.23 | |
| Score | 61/100 | 55/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.