Hardware Spec Index

Zephyra CL-2421 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL2421-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index2,338 (CPU Coolers scale)
Category rank#20,783
Street price$199
Power17 W
Performance per dollar11.75
Released2020

Specifications

BrandZephyra
ModelZephyra CL-2421 Ultra
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)
Noise34 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Zephyra CL-2421 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/31920519 (accessed 2026-10-23).