Hardware Spec Index

Teralux FN-3909 Ultra 140mm PWM ARGB Case Fan (3-Pack)

Case Fans · Teralux · SKU FN3909-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index1,327 (Case Fans scale)
Category rank#6,195
Street price$49
Power4 W
Performance per dollar27.08
Released2021

Specifications

BrandTeralux
ModelTeralux FN-3909 Ultra
Size140 × 140 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3909 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/846014 (accessed 2026-10-20).