Hardware Spec Index

Caldera CL-4638 XT 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL4638-XT · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index2,327 (CPU Coolers scale)
Category rank#13,119
Street price$179
Power17 W
Performance per dollar13.00
Released2019

Specifications

BrandCaldera
ModelCaldera CL-4638 XT
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 1,800 RPM
Pump2,900 RPM
Rated cooling330 W (manufacturer rating)
Noise36 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsCPU TDP, PPT and Turbo Power Explained

Similar CPU Coolers

ModelBenchmarkPriceCompare
Zephyra CL-1112 SE Single tower Air CPU Cooler1,321$49Compare
Brontix CL-9777 XT 240mm AIO Liquid CPU Cooler838$19Compare
Caldera CL-7288 Core Dual tower Air CPU Cooler2,213$189Compare
Zephyra CL-5871 Core 360mm AIO Liquid CPU Cooler1,883$119Compare
Caldera CL-9646 Prime 280mm AIO Liquid CPU Cooler1,140$49Compare
Zephyra CL-1039 Core Single tower Air CPU Cooler2,183$149Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Caldera CL-4638 XT 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/5117224 (accessed 2026-10-19).