Hardware Spec Index

Teralux FN-3991 Ti 120mm PWM ARGB Case Fan

Case Fans · Teralux · SKU FN3991-TI · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index1,155 (Case Fans scale)
Category rank#22,396
Street price$39
Power2 W
Performance per dollar29.62
Released2025

Specifications

BrandTeralux
ModelTeralux FN-3991 Ti
Size120 × 120 × 25 mm
Speed300–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3991 Ti 120mm PWM ARGB Case Fan”, https://vextor7.com/item/6595403 (accessed 2026-10-20).