Hardware Spec Index

Teralux FN-3857 Ultra 140mm PWM ARGB Case Fan

Case Fans · Teralux · SKU FN3857-ULTRA · Released 2020 · Updated 2026-10-22

Key facts

Benchmark index1,298 (Case Fans scale)
Category rank#38,164
Street price$49
Power3 W
Performance per dollar26.49
Released2020

Specifications

BrandTeralux
ModelTeralux FN-3857 Ultra
Size140 × 140 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise34 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, “Teralux FN-3857 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/80439957 (accessed 2026-10-22).