Hardware Spec Index

Brontix FN-3931 SE 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3931-SE · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index225 (Case Fans scale)
Category rank#42,070
Street price$9
Power3 W
Performance per dollar25.00
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3931 SE
Size140 × 140 × 25 mm
Speed200–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3931 SE 140mm PWM Case Fan”, https://vextor7.com/item/84559682 (accessed 2026-10-25).