Hardware Spec Index

Brontix FN-3811 Pro 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3811-PRO · Released 2022 · Updated 2026-10-26

Key facts

Benchmark index409 (Case Fans scale)
Category rank#45,681
Street price$9
Power3 W
Performance per dollar45.44
Released2022

Specifications

BrandBrontix
ModelBrontix FN-3811 Pro
Size140 × 140 × 25 mm
Speed500–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3811 Pro 140mm PWM Case Fan”, https://vextor7.com/item/11033995 (accessed 2026-10-26).