Brontix FN-3978 Ultra 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN3978-ULTRA · Released 2020 · Updated 2026-10-22
Key facts
| Benchmark index | 945 (Case Fans scale) |
|---|---|
| Category rank | #8,371 |
| Street price | $29 |
| Power | 4 W |
| Performance per dollar | 32.59 |
| Released | 2020 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-3978 Ultra |
| Size | 120 × 120 × 25 mm |
| Speed | 200–2,800 RPM (PWM) |
| Airflow | 95.2 CFM |
| Static pressure | 3.08 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-3978 Ultra 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/12445016 (accessed 2026-10-22).