Hardware Spec Index

Teralux FN-3851 Ultra 140mm PWM Case Fan

Case Fans · Teralux · SKU FN3851-ULTRA · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index667 (Case Fans scale)
Category rank#41,618
Street price$19
Power3 W
Performance per dollar35.11
Released2020

Specifications

BrandTeralux
ModelTeralux FN-3851 Ultra
Size140 × 140 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3851 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/60004132 (accessed 2026-10-20).