Hardware Spec Index

Brontix FN-4739 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4739-ULTRA · Released 2022 · Updated 2026-10-26

Key facts

Benchmark index451 (Case Fans scale)
Category rank#44,411
Street price$19
Power3 W
Performance per dollar23.74
Released2022

Specifications

BrandBrontix
ModelBrontix FN-4739 Ultra
Size140 × 140 × 25 mm
Speed500–2,100 RPM (PWM)
Airflow100.8 CFM
Static pressure2.00 mmH₂O
Noise35 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4739 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/6421861 (accessed 2026-10-26).