Hardware Spec Index

Caldera CL-4739 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL4739-ULTRA · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index2,256 (CPU Coolers scale)
Category rank#20,896
Street price$159
Power17 W
Performance per dollar14.19
Released2023

Specifications

BrandCaldera
ModelCaldera CL-4739 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 2,200 RPM
Pump3,000 RPM
Rated cooling330 W (manufacturer rating)
Noise36 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

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Cite this page: Hardware Spec Index, “Caldera CL-4739 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/5985102 (accessed 2026-10-24).