A3 vs Antminer S21 Immersion (301Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1280 W | 5569 W | |
| Release | 2018-01 | 2024-12 | |
| Best opportunity |  SCPNetwork |  BTCNetwork | |
| Profit/day | $-2.43 | $1.95 | |
| Score | 33/100 | 70/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | A3 | Antminer S21 Immersion (301Th) | |
|---|---|---|---|
| Blake (2b) | 820 GH/s1280 W · 640.6 MH/s/W | not supported | |
| SHA-256 | not supported | 215 TH/s3440 W · 62.5 GH/s/W |