Hardware Spec Index

Caldera CL-9921 Pro Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL9921-PRO · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index1,518 (CPU Coolers scale)
Category rank#2,912
Street price$69
Power3 W
Performance per dollar22.00
Released2021

Specifications

BrandCaldera
ModelCaldera CL-9921 Pro
TypeSingle tower air cooler
Heat pipes4× 6 mm copper
Height157 mm
Fans1× 120 mm PWM, up to 2,100 RPM
Rated cooling180 W (manufacturer rating)
Noise28 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-9921 Pro Single tower Air CPU Cooler”, https://vextor7.com/item/21751874 (accessed 2026-10-25).