Hardware Spec Index

Teralux FN-3991 Ti 120mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN3991-TI · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index391 (Case Fans scale)
Category rank#35,165
Street price$19
Power4 W
Performance per dollar20.58
Released2022

Specifications

BrandTeralux
ModelTeralux FN-3991 Ti
Size120 × 120 × 25 mm
Speed400–2,600 RPM (PWM)
Airflow88.4 CFM
Static pressure2.86 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3991 Ti 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/5286397 (accessed 2026-10-20).