Hardware Spec Index

Brontix FN-3684 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3684-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index1,131 (Case Fans scale)
Category rank#18,243
Street price$39
Power3 W
Performance per dollar29.00
Released2025

Specifications

BrandBrontix
ModelBrontix FN-3684 Ultra
Size140 × 140 × 25 mm
Speed400–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3684 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/6282775 (accessed 2026-10-24).