Hardware Spec Index

Brontix FN-4709 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4709-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index509 (Case Fans scale)
Category rank#20,123
Street price$19
Power4 W
Performance per dollar26.79
Released2025

Specifications

BrandBrontix
ModelBrontix FN-4709 Ultra
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4709 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/16366111 (accessed 2026-10-20).