S19a vs Antminer S21+ (235Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 3450 W | 3877 W | |
| Release | 2021-11 | 2025-06 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $-2.36 | $2.59 | |
| Score | 56/100 | 71/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | S19a | Antminer S21+ (235Th) | |
|---|---|---|---|
| SHA-256 | 100 TH/s3450 W · 28.99 GH/s/W | 235 TH/s3877 W · 60.61 GH/s/W |