Brontix FN-3851 Ultra 140mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN3851-ULTRA · Released 2026 · Updated 2026-10-19
Key facts
| Benchmark index | 796 (Case Fans scale) |
|---|---|
| Category rank | #1,367 |
| Street price | $29 |
| Power | 4 W |
| Performance per dollar | 27.45 |
| Released | 2026 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-3851 Ultra |
| Size | 140 × 140 × 25 mm |
| Speed | 200–2,800 RPM (PWM) |
| Airflow | 134.4 CFM |
| Static pressure | 2.66 mmH₂O |
| Noise | 29 dBA |
| Bearing | Magnetic levitation |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 100,000 hours |
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Cite this page: Hardware Spec Index, “Brontix FN-3851 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/5877647 (accessed 2026-10-19).