SealMiner A4 Ultra Hydro vs Antminer S21 Immersion (301Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 8372 W | 5569 W | |
| Release | 2026-05 | 2024-12 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $21.97 | $2.63 | |
| Score | 79/100 | 72/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | SealMiner A4 Ultra Hydro | Antminer S21 Immersion (301Th) | |
|---|---|---|---|
| SHA-256 | 886 TH/s8372 W · 105.8 GH/s/W | 215 TH/s3440 W · 62.5 GH/s/W |