Hardware Spec Index

Caldera CL-3666 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL3666-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index2,480 (CPU Coolers scale)
Category rank#39,393
Street price$199
Power17 W
Performance per dollar12.46
Released2019

Specifications

BrandCaldera
ModelCaldera CL-3666 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 2,300 RPM
Pump3,100 RPM
Rated cooling330 W (manufacturer rating)
Noise34 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-3666 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/3625360 (accessed 2026-10-21).