Hardware Spec Index

Zephyra CL-6418 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6418-ULTRA · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index2,240 (CPU Coolers scale)
Category rank#26,292
Street price$179
Power17 W
Performance per dollar12.51
Released2023

Specifications

BrandZephyra
ModelZephyra CL-6418 Ultra
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)
Noise31 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-6418 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/31582832 (accessed 2026-10-26).