Hardware Spec Index

Brontix FN-4478 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN4478-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index740 (Case Fans scale)
Category rank#18,004
Street price$19
Power4 W
Performance per dollar38.95
Released2026

Specifications

BrandBrontix
ModelBrontix FN-4478 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise27 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4478 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/20130753 (accessed 2026-10-22).