Hardware Spec Index

Caldera CL-6421 Prime Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL6421-PRIME · Released 2020 · Updated 2026-10-22

Key facts

Benchmark index1,117 (CPU Coolers scale)
Category rank#1,753
Street price$49
Power3 W
Performance per dollar22.80
Released2020

Specifications

BrandCaldera
ModelCaldera CL-6421 Prime
TypeSingle tower air cooler
Heat pipes4× 6 mm copper
Height157 mm
Fans1× 120 mm PWM, up to 1,800 RPM
Rated cooling180 W (manufacturer rating)
Noise29 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-6421 Prime Single tower Air CPU Cooler”, https://vextor7.com/item/31313555 (accessed 2026-10-22).