Hardware Spec Index

Brontix FN-9421 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN9421-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index728 (Case Fans scale)
Category rank#22,789
Street price$19
Power3 W
Performance per dollar38.32
Released2021

Specifications

BrandBrontix
ModelBrontix FN-9421 Ultra
Size140 × 140 × 25 mm
Speed500–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9421 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/7060711 (accessed 2026-10-22).