Hardware Spec Index

Brontix FN-4989 Prime 120mm PWM Case Fan

Case Fans · Brontix · SKU FN4989-PRIME · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index557 (Case Fans scale)
Category rank#49,329
Street price$19
Power3 W
Performance per dollar29.32
Released2020

Specifications

BrandBrontix
ModelBrontix FN-4989 Prime
Size120 × 120 × 25 mm
Speed400–2,300 RPM (PWM)
Airflow78.2 CFM
Static pressure2.53 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4989 Prime 120mm PWM Case Fan”, https://vextor7.com/item/354241 (accessed 2026-10-21).