Hardware Spec Index

Brontix FN-3690 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3690-ULTRA · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index337 (Case Fans scale)
Category rank#12,386
Street price$9
Power4 W
Performance per dollar37.44
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3690 Ultra
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise36 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3690 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/150672 (accessed 2026-10-18).