Hardware Spec Index

Brontix FN-4640 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN4640-PRO · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index357 (Case Fans scale)
Category rank#43,418
Street price$9
Power3 W
Performance per dollar39.67
Released2019

Specifications

BrandBrontix
ModelBrontix FN-4640 Pro
Size120 × 120 × 25 mm
Speed400–2,400 RPM (PWM)
Airflow81.6 CFM
Static pressure2.64 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4640 Pro 120mm PWM Case Fan”, https://vextor7.com/item/6712866 (accessed 2026-10-19).