Hardware Spec Index

Brontix FN-3840 Prime 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3840-PRIME · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index1,207 (Case Fans scale)
Category rank#13,557
Street price$39
Power4 W
Performance per dollar30.95
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3840 Prime
Size140 × 140 × 25 mm
Speed500–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise27 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3840 Prime 140mm PWM ARGB Case Fan”, https://vextor7.com/item/96828027 (accessed 2026-10-25).