Hardware Spec Index

Zephyra CL-6521 Ultra 280mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6521-ULTRA · Released 2026 · Updated 2026-10-20

Key facts

Benchmark index1,378 (CPU Coolers scale)
Category rank#24,913
Street price$59
Power13 W
Performance per dollar23.36
Released2026

Specifications

BrandZephyra
ModelZephyra CL-6521 Ultra
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 38 mm thick
Fans2× 140 mm, up to 2,500 RPM
Pump3,200 RPM
Rated cooling280 W (manufacturer rating)
Noise35 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

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Cite this page: Hardware Spec Index, “Zephyra CL-6521 Ultra 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/6256249 (accessed 2026-10-20).