Hardware Spec Index

Caldera CL-8643 Ultra Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL8643-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index1,166 (CPU Coolers scale)
Category rank#43,068
Street price$49
Power3 W
Performance per dollar23.80
Released2021

Specifications

BrandCaldera
ModelCaldera CL-8643 Ultra
TypeSingle tower air cooler
Heat pipes4× 6 mm copper
Height157 mm
Fans1× 120 mm PWM, up to 2,000 RPM
Rated cooling180 W (manufacturer rating)
Noise33 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-8643 Ultra Single tower Air CPU Cooler”, https://vextor7.com/item/61671354 (accessed 2026-10-20).