Hardware Spec Index

Brontix FN-9957 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN9957-ULTRA · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index302 (Case Fans scale)
Category rank#3,370
Street price$9
Power4 W
Performance per dollar33.56
Released2023

Specifications

BrandBrontix
ModelBrontix FN-9957 Ultra
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9957 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/8554914 (accessed 2026-10-20).