Hardware Spec Index

Teralux FN-3781 Prime 120mm PWM ARGB Case Fan (3-Pack)

Case Fans · Teralux · SKU FN3781-PRIME · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index1,276 (Case Fans scale)
Category rank#7,174
Street price$49
Power4 W
Performance per dollar26.04
Released2021

Specifications

BrandTeralux
ModelTeralux FN-3781 Prime
Size120 × 120 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise30 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3781 Prime 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/52595671 (accessed 2026-10-21).