Hardware Spec Index

Brontix FN-3946 Plus 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3946-PLUS · Released 2025 · Updated 2026-10-22

Key facts

Benchmark index228 (Case Fans scale)
Category rank#5,656
Street price$9
Power4 W
Performance per dollar25.33
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3946 Plus
Size140 × 140 × 25 mm
Speed300–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3946 Plus 140mm PWM Case Fan”, https://vextor7.com/item/3464625 (accessed 2026-10-22).