Hardware Spec Index

Caldera CL-6555 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL6555-ULTRA · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index2,047 (CPU Coolers scale)
Category rank#17,482
Street price$169
Power17 W
Performance per dollar12.11
Released2019

Specifications

BrandCaldera
ModelCaldera CL-6555 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,400 RPM
Pump2,800 RPM
Rated cooling330 W (manufacturer rating)
Noise28 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-6555 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/20154131 (accessed 2026-10-20).