Hardware Spec Index

Brontix FN-5840 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN5840-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index424 (Case Fans scale)
Category rank#10,400
Street price$9
Power3 W
Performance per dollar47.11
Released2021

Specifications

BrandBrontix
ModelBrontix FN-5840 Pro
Size140 × 140 × 25 mm
Speed500–1,500 RPM (PWM)
Airflow72.0 CFM
Static pressure1.43 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5840 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/8201511 (accessed 2026-10-22).