Hardware Spec Index

Zephyra CL-8521 Ultra 280mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL8521-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index1,613 (CPU Coolers scale)
Category rank#37,710
Street price$69
Power13 W
Performance per dollar23.38
Released2023

Specifications

BrandZephyra
ModelZephyra CL-8521 Ultra
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 38 mm thick
Fans2× 140 mm, up to 2,300 RPM
Pump3,300 RPM
Rated cooling280 W (manufacturer rating)
Noise35 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-8521 Ultra 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/2928429 (accessed 2026-10-22).