Hardware Spec Index

Brontix FN-4091 XT 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4091-XT · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index350 (Case Fans scale)
Category rank#49,204
Street price$9
Power3 W
Performance per dollar38.89
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4091 XT
Size140 × 140 × 25 mm
Speed400–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise25 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4091 XT 140mm PWM Case Fan”, https://vextor7.com/item/8337158 (accessed 2026-10-22).