Hardware Spec Index

Zephyra CL-9643 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL9643-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index2,033 (CPU Coolers scale)
Category rank#39,249
Street price$149
Power17 W
Performance per dollar13.64
Released2026

Specifications

BrandZephyra
ModelZephyra CL-9643 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,500 RPM
Pump3,200 RPM
Rated cooling330 W (manufacturer rating)
Noise28 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

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Cite this page: Hardware Spec Index, “Zephyra CL-9643 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/46973708 (accessed 2026-10-22).