Hardware Spec Index

Brontix FN-5855 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN5855-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index280 (Case Fans scale)
Category rank#46,082
Street price$9
Power3 W
Performance per dollar31.11
Released2020

Specifications

BrandBrontix
ModelBrontix FN-5855 Ultra
Size140 × 140 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise32 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5855 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/84556527 (accessed 2026-10-25).