Hardware Spec Index

Zephyra CL-6421 Pro 280mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6421-PRO · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index1,077 (CPU Coolers scale)
Category rank#27,075
Street price$39
Power13 W
Performance per dollar27.62
Released2020

Specifications

BrandZephyra
ModelZephyra CL-6421 Pro
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 38 mm thick
Fans2× 140 mm, up to 1,600 RPM
Pump3,100 RPM
Rated cooling280 W (manufacturer rating)
Noise29 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-6421 Pro 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/94868067 (accessed 2026-10-24).