S21 Hyd vs SealMiner A3 Hydro
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 5360 W | 6750 W | |
| Release | 2024-02 | 2025-09 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $3.57 | $7.73 | |
| Score | 71/100 | 74/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | S21 Hyd | SealMiner A3 Hydro | |
|---|---|---|---|
| SHA-256 | 335 TH/s5360 W · 62.5 GH/s/W | 500 TH/s6750 W · 74.07 GH/s/W |