Hardware Spec Index

Brontix FN-9857 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN9857-ULTRA · Released 2025 · Updated 2026-10-26

Key facts

Benchmark index446 (Case Fans scale)
Category rank#13,449
Street price$19
Power2 W
Performance per dollar23.47
Released2025

Specifications

BrandBrontix
ModelBrontix FN-9857 Ultra
Size140 × 140 × 25 mm
Speed500–1,400 RPM (PWM)
Airflow67.2 CFM
Static pressure1.33 mmH₂O
Noise36 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9857 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/94886552 (accessed 2026-10-26).