Hardware Spec Index

Brontix FN-9891 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9891-PRO · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index651 (Case Fans scale)
Category rank#46,701
Street price$19
Power4 W
Performance per dollar34.26
Released2019

Specifications

BrandBrontix
ModelBrontix FN-9891 Pro
Size120 × 120 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9891 Pro 120mm PWM Case Fan”, https://vextor7.com/item/14412293 (accessed 2026-10-26).