Hardware Spec Index

Teralux FN-4020 Ultra 140mm PWM Case Fan

Case Fans · Teralux · SKU FN4020-ULTRA · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index719 (Case Fans scale)
Category rank#27,604
Street price$29
Power3 W
Performance per dollar24.79
Released2021

Specifications

BrandTeralux
ModelTeralux FN-4020 Ultra
Size140 × 140 × 25 mm
Speed400–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4020 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/82882904 (accessed 2026-10-23).