AvalonMiner 821 vs X4-QZ
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1200 W | 340 W | |
| Release | 2018-02 | 2023-03 | |
| Best opportunity |  BTCNetwork |  ETCNetwork | |
| Profit/day | $-1.84 | $-0.02 | |
| Score | 49/100 | 64/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.