Hardware Spec Index

Teralux FN-4991 Pro 140mm PWM ARGB Case Fan (3-Pack)

Case Fans · Teralux · SKU FN4991-PRO · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index1,181 (Case Fans scale)
Category rank#17,445
Street price$39
Power3 W
Performance per dollar30.28
Released2021

Specifications

BrandTeralux
ModelTeralux FN-4991 Pro
Size140 × 140 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise26 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4991 Pro 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/6530702 (accessed 2026-10-23).