Hardware Spec Index

Brontix FN-3558 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3558-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index742 (Case Fans scale)
Category rank#27,066
Street price$19
Power3 W
Performance per dollar39.05
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3558 Ultra
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3558 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/15655165 (accessed 2026-10-23).