Hardware Spec Index

Brontix FN-9951 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN9951-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index551 (Case Fans scale)
Category rank#6,632
Street price$19
Power4 W
Performance per dollar29.00
Released2025

Specifications

BrandBrontix
ModelBrontix FN-9951 Ultra
Size140 × 140 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise35 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9951 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/99863377 (accessed 2026-10-20).