Hardware Spec Index

Brontix FN-3856 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3856-ULTRA · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index698 (Case Fans scale)
Category rank#21,578
Street price$29
Power3 W
Performance per dollar24.07
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3856 Ultra
Size140 × 140 × 25 mm
Speed500–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3856 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/18560433 (accessed 2026-10-25).