Hardware Spec Index

Caldera CL-4421 Prime 280mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL4421-PRIME · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index1,867 (CPU Coolers scale)
Category rank#3,599
Street price$99
Power13 W
Performance per dollar18.86
Released2021

Specifications

BrandCaldera
ModelCaldera CL-4421 Prime
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 27 mm thick
Fans2× 140 mm, up to 2,200 RPM
Pump2,800 RPM
Rated cooling280 W (manufacturer rating)
Noise35 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-4421 Prime 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/4975591 (accessed 2026-10-22).