Hardware Spec Index

Brontix FN-5857 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN5857-PRO · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index207 (Case Fans scale)
Category rank#21,098
Street price$9
Power3 W
Performance per dollar23.00
Released2022

Specifications

BrandBrontix
ModelBrontix FN-5857 Pro
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise34 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5857 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/6609930 (accessed 2026-10-21).