Hardware Spec Index

Brontix FN-3931 Core 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3931-CORE · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index683 (Case Fans scale)
Category rank#20,839
Street price$19
Power3 W
Performance per dollar35.95
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3931 Core
Size120 × 120 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3931 Core 120mm PWM Case Fan”, https://vextor7.com/item/96861615 (accessed 2026-10-25).