Hardware Spec Index

Caldera FN-6659 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6659-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index573 (Case Fans scale)
Category rank#12,763
Street price$19
Power4 W
Performance per dollar30.16
Released2020

Specifications

BrandCaldera
ModelCaldera FN-6659 Ultra
Size140 × 140 × 25 mm
Speed200–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise36 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6659 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/91670938 (accessed 2026-10-19).