Hardware Spec Index

Zephyra CL-6638 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6638-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index717 (CPU Coolers scale)
Category rank#44,173
Street price$19
Power12 W
Performance per dollar37.74
Released2026

Specifications

BrandZephyra
ModelZephyra CL-6638 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 27 mm thick
Fans2× 120 mm, up to 2,300 RPM
Pump3,000 RPM
Rated cooling250 W (manufacturer rating)
Noise24 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-6638 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/418534 (accessed 2026-10-22).