Hardware Spec Index

Brontix FN-9391 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN9391-ULTRA · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index342 (Case Fans scale)
Category rank#33,304
Street price$9
Power3 W
Performance per dollar38.00
Released2020

Specifications

BrandBrontix
ModelBrontix FN-9391 Ultra
Size120 × 120 × 25 mm
Speed200–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise23 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9391 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/51452411 (accessed 2026-10-20).