Hardware Spec Index

Caldera CL-8421 Ultra 360mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL8421-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index1,309 (CPU Coolers scale)
Category rank#34,264
Street price$69
Power15 W
Performance per dollar18.97
Released2021

Specifications

BrandCaldera
ModelCaldera CL-8421 Ultra
TypeAll-in-one liquid cooler
Radiator360 mm, aluminum, 30 mm thick
Fans3× 120 mm, up to 2,500 RPM
Pump3,200 RPM
Rated cooling300 W (manufacturer rating)
Noise30 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty5 years

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Cite this page: Hardware Spec Index, “Caldera CL-8421 Ultra 360mm AIO Liquid CPU Cooler”, https://vextor7.com/item/1383702 (accessed 2026-10-22).