Hardware Spec Index

Brontix FN-9851 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN9851-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index672 (Case Fans scale)
Category rank#47,953
Street price$19
Power3 W
Performance per dollar35.37
Released2021

Specifications

BrandBrontix
ModelBrontix FN-9851 Ultra
Size120 × 120 × 25 mm
Speed500–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 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-9851 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/4046586 (accessed 2026-10-21).