Hardware Spec Index

Caldera FN-3840 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3840-ULTRA · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index490 (Case Fans scale)
Category rank#266
Street price$19
Power3 W
Performance per dollar25.79
Released2022

Specifications

BrandCaldera
ModelCaldera FN-3840 Ultra
Size120 × 120 × 25 mm
Speed400–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise36 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3840 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/7205205 (accessed 2026-10-21).