Hardware Spec Index

Brontix FN-3685 Prime 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3685-PRIME · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index734 (Case Fans scale)
Category rank#30,442
Street price$19
Power4 W
Performance per dollar38.63
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3685 Prime
Size140 × 140 × 25 mm
Speed400–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3685 Prime 140mm PWM Case Fan”, https://vextor7.com/item/4181504 (accessed 2026-10-21).