Hardware Spec Index

Teralux FN-4257 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN4257-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index354 (Case Fans scale)
Category rank#12,999
Street price$19
Power3 W
Performance per dollar18.63
Released2020

Specifications

BrandTeralux
ModelTeralux FN-4257 Ultra
Size140 × 140 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4257 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/56580172 (accessed 2026-10-25).