Hardware Spec Index

Caldera FN-6668 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6668-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index705 (Case Fans scale)
Category rank#9,456
Street price$19
Power3 W
Performance per dollar37.11
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6668 Ultra
Size140 × 140 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6668 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/3435690 (accessed 2026-10-24).