Hardware Spec Index

Teralux FN-3891 Pro 120mm PWM Case Fan

Case Fans · Teralux · SKU FN3891-PRO · Released 2019 · Updated 2026-10-23

Key facts

Benchmark index792 (Case Fans scale)
Category rank#40,815
Street price$29
Power3 W
Performance per dollar27.31
Released2019

Specifications

BrandTeralux
ModelTeralux FN-3891 Pro
Size120 × 120 × 25 mm
Speed400–1,900 RPM (PWM)
Airflow64.6 CFM
Static pressure2.09 mmH₂O
Noise36 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3891 Pro 120mm PWM Case Fan”, https://vextor7.com/item/79486298 (accessed 2026-10-23).