Hardware Spec Index

Caldera FN-9639 Prime 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN9639-PRIME · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index260 (Case Fans scale)
Category rank#26,177
Street price$9
Power3 W
Performance per dollar28.89
Released2021

Specifications

BrandCaldera
ModelCaldera FN-9639 Prime
Size140 × 140 × 25 mm
Speed400–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise35 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-9639 Prime 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/31311347 (accessed 2026-10-22).