Hardware Spec Index

Caldera FN-3940 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3940-ULTRA · Released 2024 · Updated 2026-10-21

Key facts

Benchmark index486 (Case Fans scale)
Category rank#13,330
Street price$19
Power3 W
Performance per dollar25.58
Released2024

Specifications

BrandCaldera
ModelCaldera FN-3940 Ultra
Size120 × 120 × 25 mm
Speed200–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise34 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3940 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/6556942 (accessed 2026-10-21).