Hardware Spec Index

Brontix FN-4784 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4784-ULTRA · Released 2022 · Updated 2026-10-25

Key facts

Benchmark index427 (Case Fans scale)
Category rank#5,681
Street price$19
Power4 W
Performance per dollar22.47
Released2022

Specifications

BrandBrontix
ModelBrontix FN-4784 Ultra
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise29 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4784 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/1229583 (accessed 2026-10-25).