Hardware Spec Index

Brontix FN-3946 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3946-ULTRA · Released 2026 · Updated 2026-10-24

Key facts

Benchmark index1,348 (Case Fans scale)
Category rank#25,014
Street price$49
Power3 W
Performance per dollar27.51
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3946 Ultra
Size140 × 140 × 25 mm
Speed200–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise35 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3946 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/1631815 (accessed 2026-10-24).