Hardware Spec Index

Caldera FN-3909 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN3909-PRO · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index695 (Case Fans scale)
Category rank#9,955
Street price$19
Power3 W
Performance per dollar36.58
Released2024

Specifications

BrandCaldera
ModelCaldera FN-3909 Pro
Size140 × 140 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3909 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/735305 (accessed 2026-10-23).