Hardware Spec Index

Zephyra CL-5903 Plus 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL5903-PLUS · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index1,898 (CPU Coolers scale)
Category rank#38,742
Street price$109
Power17 W
Performance per dollar17.41
Released2022

Specifications

BrandZephyra
ModelZephyra CL-5903 Plus
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 38 mm thick
Fans3× 140 mm, up to 2,400 RPM
Pump3,400 RPM
Rated cooling330 W (manufacturer rating)
Noise29 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

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Cite this page: Hardware Spec Index, “Zephyra CL-5903 Plus 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/85640141 (accessed 2026-10-19).