Hardware Spec Index

Brontix FN-3964 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3964-PRIME · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index777 (Case Fans scale)
Category rank#17,958
Street price$19
Power3 W
Performance per dollar40.89
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3964 Prime
Size120 × 120 × 25 mm
Speed200–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise29 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3964 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/1919980 (accessed 2026-10-23).