Hardware Spec Index

Caldera CL-4427 Ultra 280mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL4427-ULTRA · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index828 (CPU Coolers scale)
Category rank#40,231
Street price$29
Power13 W
Performance per dollar28.55
Released2019

Specifications

BrandCaldera
ModelCaldera CL-4427 Ultra
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 30 mm thick
Fans2× 140 mm, up to 2,100 RPM
Pump3,000 RPM
Rated cooling280 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-4427 Ultra 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/18136453 (accessed 2026-10-19).