Hardware Spec Index

Brontix FN-3491 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3491-ULTRA · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index525 (Case Fans scale)
Category rank#6,211
Street price$19
Power4 W
Performance per dollar27.63
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3491 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3491 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/45303833 (accessed 2026-10-19).