Antminer S21+ (225Th) vs Antminer Z9
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 3712 W | 970 W | |
| Release | 2025-06 | 2018-09 | |
| Best opportunity |  BTCNetwork |  ZECNetwork | |
| Profit/day | $1.94 | $0.73 | |
| Score | 70/100 | 72/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.