Brontix FN-4789 Ultra 140mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN4789-ULTRA · Released 2025 · Updated 2026-10-21
Key facts
| Benchmark index | 1,343 (Case Fans scale) |
|---|---|
| Category rank | #2,480 |
| Street price | $49 |
| Power | 3 W |
| Performance per dollar | 27.41 |
| Released | 2025 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-4789 Ultra |
| Size | 140 × 140 × 25 mm |
| Speed | 200–1,900 RPM (PWM) |
| Airflow | 91.2 CFM |
| Static pressure | 1.80 mmH₂O |
| Noise | 23 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-4789 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/68305247 (accessed 2026-10-21).