Hardware Spec Index

Caldera FN-4381 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN4381-ULTRA · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index270 (Case Fans scale)
Category rank#43,006
Street price$9
Power3 W
Performance per dollar30.00
Released2019

Specifications

BrandCaldera
ModelCaldera FN-4381 Ultra
Size140 × 140 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise25 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4381 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/6766078 (accessed 2026-10-22).