Hardware Spec Index

Caldera CL-6721 Prime 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL6721-PRIME · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index2,091 (CPU Coolers scale)
Category rank#46,608
Street price$149
Power17 W
Performance per dollar14.03
Released2026

Specifications

BrandCaldera
ModelCaldera CL-6721 Prime
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 2,400 RPM
Pump2,800 RPM
Rated cooling330 W (manufacturer rating)
Noise35 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

Related guides

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Cite this page: Hardware Spec Index, “Caldera CL-6721 Prime 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/2249488 (accessed 2026-10-19).