Hardware Spec Index

Zephyra CL-6644 Pro 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6644-PRO · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index2,325 (CPU Coolers scale)
Category rank#8,624
Street price$189
Power17 W
Performance per dollar12.30
Released2021

Specifications

BrandZephyra
ModelZephyra CL-6644 Pro
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 1,800 RPM
Pump3,400 RPM
Rated cooling330 W (manufacturer rating)
Noise24 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty5 years

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Cite this page: Hardware Spec Index, “Zephyra CL-6644 Pro 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/51316413 (accessed 2026-10-26).