Hardware Spec Index

Brontix FN-3857 Ultra 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3857-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index1,162 (Case Fans scale)
Category rank#12,360
Street price$39
Power3 W
Performance per dollar29.79
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3857 Ultra
Size120 × 120 × 25 mm
Speed400–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise32 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-3857 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/67897 (accessed 2026-10-19).