Hardware Spec Index

Brontix FN-8391 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN8391-ULTRA · Released 2022 · Updated 2026-10-23

Key facts

Benchmark index219 (Case Fans scale)
Category rank#10,436
Street price$9
Power3 W
Performance per dollar24.33
Released2022

Specifications

BrandBrontix
ModelBrontix FN-8391 Ultra
Size120 × 120 × 25 mm
Speed300–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-8391 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/7702583 (accessed 2026-10-23).