Hardware Spec Index

Brontix FN-6491 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN6491-ULTRA · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index595 (Case Fans scale)
Category rank#17,640
Street price$19
Power3 W
Performance per dollar31.32
Released2019

Specifications

BrandBrontix
ModelBrontix FN-6491 Ultra
Size140 × 140 × 25 mm
Speed200–1,500 RPM (PWM)
Airflow72.0 CFM
Static pressure1.43 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-6491 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/24254976 (accessed 2026-10-19).