Hardware Spec Index

Caldera CL-6738 Ultra Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL6738-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index467 (CPU Coolers scale)
Category rank#21,202
Street price$19
Power3 W
Performance per dollar24.58
Released2021

Specifications

BrandCaldera
ModelCaldera CL-6738 Ultra
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)
Noise31 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-6738 Ultra Single tower Air CPU Cooler”, https://vextor7.com/item/409761 (accessed 2026-10-20).