Brontix FN-4857 Prime 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN4857-PRIME · Released 2021 · Updated 2026-10-19
Key facts
| Benchmark index | 944 (Case Fans scale) |
|---|---|
| Category rank | #45,026 |
| Street price | $29 |
| Power | 3 W |
| Performance per dollar | 32.55 |
| Released | 2021 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-4857 Prime |
| Size | 120 × 120 × 25 mm |
| Speed | 400–2,100 RPM (PWM) |
| Airflow | 71.4 CFM |
| Static pressure | 2.31 mmH₂O |
| Noise | 33 dBA |
| Bearing | Fluid dynamic bearing |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 50,000 hours |
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Cite this page: Hardware Spec Index, “Brontix FN-4857 Prime 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/989678 (accessed 2026-10-19).