Hardware Spec Index

Zephyra CL-6421 SE 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6421-SE · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index846 (CPU Coolers scale)
Category rank#14,490
Street price$29
Power12 W
Performance per dollar29.17
Released2025

Specifications

BrandZephyra
ModelZephyra CL-6421 SE
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 38 mm thick
Fans2× 120 mm, up to 1,600 RPM
Pump2,800 RPM
Rated cooling250 W (manufacturer rating)
Noise27 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

Related guides

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Cite this page: Hardware Spec Index, “Zephyra CL-6421 SE 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/93669113 (accessed 2026-10-20).