A3 vs A21
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1280 W | 1800 W | |
| Release | 2018-01 | 2025-01 | |
| Best opportunity |  SCNetwork |  NEXANetwork | |
| Profit/day | $-1.45 | $1.71 | |
| Score | 28/100 | 61/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | A3 | A21 | |
|---|---|---|---|
| Blake (2b) | 820 GH/s1280 W · 640.6 MH/s/W | not supported | |
| NexaPoW | not supported | 3.4 GH/s1800 W · 1.889 MH/s/W |