S9i vs Antminer S21+ (225Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1280 W | 3712 W | |
| Release | 2018-05 | 2025-06 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $-1.92 | $2.12 | |
| Score | 49/100 | 70/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | S9i | Antminer S21+ (225Th) | |
|---|---|---|---|
| SHA-256 | 13 TH/s1280 W · 10.16 GH/s/W | 225 TH/s3712 W · 60.61 GH/s/W |