Hardware Spec Index

Brontix FN-3689 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3689-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index249 (Case Fans scale)
Category rank#28,172
Street price$9
Power4 W
Performance per dollar27.67
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3689 Ultra
Size120 × 120 × 25 mm
Speed300–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise29 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3689 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/1495571 (accessed 2026-10-21).