Hardware Spec Index

Brontix FN-3904 Prime 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3904-PRIME · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index710 (Case Fans scale)
Category rank#36,956
Street price$19
Power3 W
Performance per dollar37.37
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3904 Prime
Size140 × 140 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise25 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3904 Prime 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/3802075 (accessed 2026-10-20).