Hardware Spec Index

Zephyra CL-4737 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL4737-ULTRA · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index1,764 (CPU Coolers scale)
Category rank#46,027
Street price$109
Power17 W
Performance per dollar16.18
Released2020

Specifications

BrandZephyra
ModelZephyra CL-4737 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,500 RPM
Pump3,100 RPM
Rated cooling330 W (manufacturer rating)
Noise28 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-4737 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/91828524 (accessed 2026-10-21).