S9i vs WhatsMiner M66S++
Side-by-side mining comparison: specs, per-algorithm benchmarks, efficiency and current profitability.
| Type | ASIC | ASIC | |
| Power | 1280 W | 5518 W | |
| Release | 2018-05 | 2024-12 | |
| Best opportunity |  BTCNetwork | BTCNetwork | |
| Profit/day | $-1.92 | $4.06 | |
| Score | 49/100 | 72/100 | |
| View details → | View details → |
Benchmarks by algorithm
Best available benchmark per device; efficiency = hashrate per watt.
| Algorithm | S9i | WhatsMiner M66S++ | |
|---|---|---|---|
| SHA-256 | 13 TH/s1280 W · 10.16 GH/s/W | 356 TH/s5518 W · 64.52 GH/s/W |