Hardware Spec Index

Teralux FN-3990 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN3990-PRO · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index821 (Case Fans scale)
Category rank#15,186
Street price$29
Power3 W
Performance per dollar28.31
Released2019

Specifications

BrandTeralux
ModelTeralux FN-3990 Pro
Size140 × 140 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3990 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/3707684 (accessed 2026-10-26).