Antminer A3 (815Gh) vs Antminer S21+ (225Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1275 W | 3712 W | |
| Release | 2018-01 | 2025-06 | |
| Best opportunity |  SCPNetwork |  BTCNetwork | |
| Profit/day | $-2.42 | $2.14 | |
| Score | 33/100 | 71/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | Antminer A3 (815Gh) | Antminer S21+ (225Th) | |
|---|---|---|---|
| Blake (2b) | 815 GH/s1275 W · 639.2 MH/s/W | not supported | |
| SHA-256 | not supported | 225 TH/s3712 W · 60.61 GH/s/W |