Hardware Spec Index

Brontix FN-5891 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN5891-ULTRA · Released 2025 · Updated 2026-10-23

Key facts

Benchmark index406 (Case Fans scale)
Category rank#11,285
Street price$19
Power3 W
Performance per dollar21.37
Released2025

Specifications

BrandBrontix
ModelBrontix FN-5891 Ultra
Size120 × 120 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-5891 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/91668511 (accessed 2026-10-23).