Hardware Spec Index

Brontix FN-3689 Prime 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3689-PRIME · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index743 (Case Fans scale)
Category rank#36,113
Street price$19
Power3 W
Performance per dollar39.11
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3689 Prime
Size120 × 120 × 25 mm
Speed500–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 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-3689 Prime 120mm PWM Case Fan”, https://vextor7.com/item/19908494 (accessed 2026-10-25).