Hardware Spec Index

Zephyra CL-6840 SE 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6840-SE · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index2,101 (CPU Coolers scale)
Category rank#30,647
Street price$139
Power17 W
Performance per dollar15.12
Released2021

Specifications

BrandZephyra
ModelZephyra CL-6840 SE
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 38 mm thick
Fans3× 140 mm, up to 1,500 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-6840 SE 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/80244204 (accessed 2026-10-20).