Hardware Spec Index

Teralux FN-4638 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN4638-ULTRA · Released 2022 · Updated 2026-10-25

Key facts

Benchmark index220 (Case Fans scale)
Category rank#1,120
Street price$9
Power3 W
Performance per dollar24.44
Released2022

Specifications

BrandTeralux
ModelTeralux FN-4638 Ultra
Size120 × 120 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4638 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/54552846 (accessed 2026-10-25).