A21 vs STU-U1++
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1800 W | 2200 W | |
| Release | 2025-01 | 2019-07 | |
| Best opportunity |  NEXNetwork | ||
| Profit/day | $4.80 | ||
| Score | 69/100 | ||
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | A21 | STU-U1++ | |
|---|---|---|---|
| Blake (14r) | not supported | 52 TH/s2200 W · 23.64 GH/s/W | |
| NexaPoW | 3.4 GH/s1800 W · 1.889 MH/s/W | not supported |