Hardware Spec Index

Caldera CL-6991 Ultra Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL6991-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,449 (CPU Coolers scale)
Category rank#47,225
Street price$69
Power3 W
Performance per dollar21.00
Released2021

Specifications

BrandCaldera
ModelCaldera CL-6991 Ultra
TypeSingle tower air cooler
Heat pipes6× 6 mm copper
Height159 mm
Fans1× 120 mm PWM, up to 2,100 RPM
Rated cooling220 W (manufacturer rating)
Noise24 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-6991 Ultra Single tower Air CPU Cooler”, https://vextor7.com/item/83953433 (accessed 2026-10-26).