Hardware Spec Index

Caldera FN-6648 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6648-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index700 (Case Fans scale)
Category rank#2,066
Street price$19
Power3 W
Performance per dollar36.84
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6648 Ultra
Size140 × 140 × 25 mm
Speed400–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise30 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6648 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/12858951 (accessed 2026-10-24).