Hardware Spec Index

Zephyra CL-3924 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3924-ULTRA · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,803 (CPU Coolers scale)
Category rank#33,017
Street price$129
Power17 W
Performance per dollar13.98
Released2022

Specifications

BrandZephyra
ModelZephyra CL-3924 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,500 RPM
Pump2,900 RPM
Rated cooling330 W (manufacturer rating)
Noise29 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-3924 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/20209947 (accessed 2026-10-21).