Hardware Spec Index

Caldera FN-6646 Ultra 140mm PWM ARGB Case Fan

Case Fans · Caldera · SKU FN6646-ULTRA · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index1,369 (Case Fans scale)
Category rank#49,148
Street price$49
Power4 W
Performance per dollar27.94
Released2021

Specifications

BrandCaldera
ModelCaldera FN-6646 Ultra
Size140 × 140 × 25 mm
Speed200–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6646 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/98692763 (accessed 2026-10-23).