Hardware Spec Index

Brontix FN-9840 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9840-PRO · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index393 (Case Fans scale)
Category rank#47,359
Street price$19
Power3 W
Performance per dollar20.68
Released2019

Specifications

BrandBrontix
ModelBrontix FN-9840 Pro
Size120 × 120 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise27 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9840 Pro 120mm PWM Case Fan”, https://vextor7.com/item/794441 (accessed 2026-10-19).