Hardware Spec Index

Brontix FN-4840 Pro 120mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN4840-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index696 (Case Fans scale)
Category rank#11,620
Street price$19
Power4 W
Performance per dollar36.63
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4840 Pro
Size120 × 120 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise34 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4840 Pro 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/93029172 (accessed 2026-10-22).