Hardware Spec Index

Brontix FN-4003 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4003-ULTRA · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index409 (Case Fans scale)
Category rank#33,161
Street price$9
Power4 W
Performance per dollar45.44
Released2020

Specifications

BrandBrontix
ModelBrontix FN-4003 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise27 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4003 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/6094433 (accessed 2026-10-21).