Hardware Spec Index

Teralux FN-4091 Ultra 120mm PWM Case Fan

Case Fans · Teralux · SKU FN4091-ULTRA · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index688 (Case Fans scale)
Category rank#31,148
Street price$19
Power3 W
Performance per dollar36.21
Released2021

Specifications

BrandTeralux
ModelTeralux FN-4091 Ultra
Size120 × 120 × 25 mm
Speed500–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4091 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/7550562 (accessed 2026-10-25).