Brontix FN-3904 Ultra 140mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN3904-ULTRA · Released 2021 · Updated 2026-10-19
Key facts
| Benchmark index | 838 (Case Fans scale) |
|---|---|
| Category rank | #24,433 |
| Street price | $29 |
| Power | 4 W |
| Performance per dollar | 28.90 |
| Released | 2021 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-3904 Ultra |
| Size | 140 × 140 × 25 mm |
| Speed | 200–2,700 RPM (PWM) |
| Airflow | 129.6 CFM |
| Static pressure | 2.56 mmH₂O |
| Noise | 27 dBA |
| Bearing | Fluid dynamic bearing |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 50,000 hours |
Related guides
Similar Case Fans
Cite this page: Hardware Spec Index, “Brontix FN-3904 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/1402017 (accessed 2026-10-19).