Hardware Spec Index

Caldera FN-6644 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN6644-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index545 (Case Fans scale)
Category rank#29,976
Street price$19
Power4 W
Performance per dollar28.68
Released2020

Specifications

BrandCaldera
ModelCaldera FN-6644 Ultra
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise23 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6644 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/630108 (accessed 2026-10-19).