Hardware Spec Index

Brontix FN-3857 Ultra 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3857-ULTRA · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index1,086 (Case Fans scale)
Category rank#36,023
Street price$39
Power4 W
Performance per dollar27.85
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3857 Ultra
Size120 × 120 × 25 mm
Speed500–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3857 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/3234548 (accessed 2026-10-24).