Hardware Spec Index

Teralux FN-3921 XT 140mm PWM Case Fan

Case Fans · Teralux · SKU FN3921-XT · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index528 (Case Fans scale)
Category rank#37,164
Street price$19
Power4 W
Performance per dollar27.79
Released2024

Specifications

BrandTeralux
ModelTeralux FN-3921 XT
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3921 XT 140mm PWM Case Fan”, https://vextor7.com/item/6004516 (accessed 2026-10-20).