Antminer R4 vs Antminer S21+ (235Th)
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 845 W | 3877 W | |
| Release | 2017-02 | 2025-06 | |
| Best opportunity |  BCHNetwork |  BTCNetwork | |
| Profit/day | $-1.30 | $2.32 | |
| Score | 49/100 | 71/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | Antminer R4 | Antminer S21+ (235Th) | |
|---|---|---|---|
| SHA-256 | 8.7 TH/s845 W · 10.3 GH/s/W | 235 TH/s3877 W · 60.61 GH/s/W |