Hardware Spec Index

Caldera CL-3947 Ultra Single tower Air CPU Cooler

CPU Coolers · Caldera · SKU CL3947-ULTRA · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index1,097 (CPU Coolers scale)
Category rank#34,976
Street price$39
Power3 W
Performance per dollar28.13
Released2023

Specifications

BrandCaldera
ModelCaldera CL-3947 Ultra
TypeSingle tower air cooler
Heat pipes6× 6 mm copper
Height161 mm
Fans1× 120 mm PWM, up to 1,900 RPM
Rated cooling220 W (manufacturer rating)
Noise27 dBA (max)
RAM clearanceUnrestricted
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsCPU TDP, PPT and Turbo Power ExplainedAMD AM5 Socket

Similar CPU Coolers

ModelBenchmarkPriceCompare
Teralux CL-4993 Ultra Dual tower Air CPU Cooler1,826$99Compare
Brontix CL-3971 Ti Low profile Air CPU Cooler592$19Compare
Zephyra CL-4753 Max Dual tower Air CPU Cooler2,434$199Compare
Teralux CL-9047 Ultra Single tower Air CPU Cooler851$29Compare
Brontix CL-8231 Core Low profile Air CPU Cooler981$29Compare
Caldera CL-6983 Core Dual tower Air CPU Cooler2,328$159Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Caldera CL-3947 Ultra Single tower Air CPU Cooler”, https://vextor7.com/item/28293686 (accessed 2026-10-19).