Hardware Spec Index

Teralux FN-3891 Pro 120mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN3891-PRO · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index271 (Case Fans scale)
Category rank#40,952
Street price$9
Power3 W
Performance per dollar30.11
Released2019

Specifications

BrandTeralux
ModelTeralux FN-3891 Pro
Size120 × 120 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3891 Pro 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/1880262 (accessed 2026-10-22).