Hardware Spec Index

Brontix FN-9581 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN9581-ULTRA · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index211 (Case Fans scale)
Category rank#22,161
Street price$9
Power3 W
Performance per dollar23.44
Released2023

Specifications

BrandBrontix
ModelBrontix FN-9581 Ultra
Size140 × 140 × 25 mm
Speed400–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise25 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9581 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/12475326 (accessed 2026-10-26).