Hardware Spec Index

Brontix FN-4840 Prime 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4840-PRIME · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index279 (Case Fans scale)
Category rank#40,768
Street price$9
Power4 W
Performance per dollar31.00
Released2019

Specifications

BrandBrontix
ModelBrontix FN-4840 Prime
Size140 × 140 × 25 mm
Speed400–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4840 Prime 140mm PWM Case Fan”, https://vextor7.com/item/10021089 (accessed 2026-10-24).