Hardware Spec Index

Brontix FN-4390 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4390-ULTRA · Released 2025 · Updated 2026-10-23

Key facts

Benchmark index345 (Case Fans scale)
Category rank#41,761
Street price$9
Power3 W
Performance per dollar38.33
Released2025

Specifications

BrandBrontix
ModelBrontix FN-4390 Ultra
Size140 × 140 × 25 mm
Speed500–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise29 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4390 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/11228050 (accessed 2026-10-23).