Hardware Spec Index

Caldera CL-1665 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL1665-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index2,398 (CPU Coolers scale)
Category rank#19,943
Street price$199
Power17 W
Performance per dollar12.05
Released2025

Specifications

BrandCaldera
ModelCaldera CL-1665 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,500 RPM
Pump3,200 RPM
Rated cooling330 W (manufacturer rating)
Noise24 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

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Cite this page: Hardware Spec Index, “Caldera CL-1665 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/9687564 (accessed 2026-10-21).