Hardware Spec Index

Brontix FN-6391 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN6391-ULTRA · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index940 (Case Fans scale)
Category rank#11,893
Street price$29
Power4 W
Performance per dollar32.41
Released2023

Specifications

BrandBrontix
ModelBrontix FN-6391 Ultra
Size140 × 140 × 25 mm
Speed300–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-6391 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/5367792 (accessed 2026-10-26).