Hardware Spec Index

Brontix FN-3946 Ultra 140mm PWM ARGB Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3946-ULTRA · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index1,338 (Case Fans scale)
Category rank#38,571
Street price$49
Power3 W
Performance per dollar27.31
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3946 Ultra
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise36 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-3946 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/1399728 (accessed 2026-10-26).