Hardware Spec Index

Brontix FN-9891 Prime 120mm PWM Case Fan

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

Key facts

Benchmark index351 (Case Fans scale)
Category rank#41,322
Street price$9
Power4 W
Performance per dollar39.00
Released2019

Specifications

BrandBrontix
ModelBrontix FN-9891 Prime
Size120 × 120 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9891 Prime 120mm PWM Case Fan”, https://vextor7.com/item/5755183 (accessed 2026-10-26).