Hardware Spec Index

Brontix FN-3811 Pro 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3811-PRO · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index607 (Case Fans scale)
Category rank#19,571
Street price$19
Power4 W
Performance per dollar31.95
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3811 Pro
Size140 × 140 × 25 mm
Speed300–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise26 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3811 Pro 140mm PWM Case Fan”, https://vextor7.com/item/10322249 (accessed 2026-10-23).