Hardware Spec Index

Teralux FN-3991 Ti 140mm PWM ARGB Case Fan

Case Fans · Teralux · SKU FN3991-TI · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index1,400 (Case Fans scale)
Category rank#9,566
Street price$49
Power3 W
Performance per dollar28.57
Released2024

Specifications

BrandTeralux
ModelTeralux FN-3991 Ti
Size140 × 140 × 25 mm
Speed200–1,500 RPM (PWM)
Airflow72.0 CFM
Static pressure1.43 mmH₂O
Noise28 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-3991 Ti 140mm PWM ARGB Case Fan”, https://vextor7.com/item/6774835 (accessed 2026-10-20).