Hardware Spec Index

Brontix FN-3964 Pro 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3964-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index382 (Case Fans scale)
Category rank#38,157
Street price$9
Power4 W
Performance per dollar42.44
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3964 Pro
Size140 × 140 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise29 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3964 Pro 140mm PWM Case Fan”, https://vextor7.com/item/501620 (accessed 2026-10-22).