Hardware Spec Index

Zephyra CL-5603 Pro 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL5603-PRO · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index2,291 (CPU Coolers scale)
Category rank#35,506
Street price$139
Power17 W
Performance per dollar16.48
Released2021

Specifications

BrandZephyra
ModelZephyra CL-5603 Pro
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 2,200 RPM
Pump3,000 RPM
Rated cooling330 W (manufacturer rating)
Noise28 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Zephyra CL-5603 Pro 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/73313739 (accessed 2026-10-20).