Hardware Spec Index

Brontix FN-3684 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3684-ULTRA · Released 2025 · Updated 2026-10-22

Key facts

Benchmark index554 (Case Fans scale)
Category rank#35,873
Street price$19
Power3 W
Performance per dollar29.16
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3684 Ultra
Size140 × 140 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3684 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/79486064 (accessed 2026-10-22).