Hardware Spec Index

Caldera FN-3391 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN3391-ULTRA · Released 2025 · Updated 2026-10-23

Key facts

Benchmark index446 (Case Fans scale)
Category rank#30,518
Street price$19
Power3 W
Performance per dollar23.47
Released2025

Specifications

BrandCaldera
ModelCaldera FN-3391 Ultra
Size140 × 140 × 25 mm
Speed200–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise22 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3391 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/19536636 (accessed 2026-10-23).