Hardware Spec Index

Brontix FN-4978 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4978-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index249 (Case Fans scale)
Category rank#43,212
Street price$9
Power3 W
Performance per dollar27.67
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4978 Ultra
Size120 × 120 × 25 mm
Speed200–1,600 RPM (PWM)
Airflow54.4 CFM
Static pressure1.76 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4978 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/3535482 (accessed 2026-10-19).