Hardware Spec Index

Zephyra CL-9821 Pro 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL9821-PRO · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index1,822 (CPU Coolers scale)
Category rank#24,279
Street price$129
Power17 W
Performance per dollar14.12
Released2023

Specifications

BrandZephyra
ModelZephyra CL-9821 Pro
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,300 RPM
Pump3,300 RPM
Rated cooling330 W (manufacturer rating)
Noise30 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

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Cite this page: Hardware Spec Index, “Zephyra CL-9821 Pro 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/16814101 (accessed 2026-10-19).