Hardware Spec Index

Brontix FN-3691 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3691-PRO · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index249 (Case Fans scale)
Category rank#42,506
Street price$9
Power4 W
Performance per dollar27.67
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3691 Pro
Size120 × 120 × 25 mm
Speed200–2,700 RPM (PWM)
Airflow91.8 CFM
Static pressure2.97 mmH₂O
Noise24 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3691 Pro 120mm PWM Case Fan”, https://vextor7.com/item/8350869 (accessed 2026-10-20).