Antminer S15 (28Th) vs Antminer S21+ (225Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1596 W | 3712 W | |
| Release | 2018-12 | 2025-06 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $-0.94 | $2.07 | |
| Score | 49/100 | 70/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | Antminer S15 (28Th) | Antminer S21+ (225Th) | |
|---|---|---|---|
| SHA-256 | 17 TH/s850 W · 20 GH/s/W | 225 TH/s3712 W · 60.61 GH/s/W |