Hardware Spec Index

Zephyra CL-8991 Ultra 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL8991-ULTRA · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index2,233 (CPU Coolers scale)
Category rank#24,929
Street price$179
Power17 W
Performance per dollar12.47
Released2026

Specifications

BrandZephyra
ModelZephyra CL-8991 Ultra
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 1,700 RPM
Pump3,200 RPM
Rated cooling330 W (manufacturer rating)
Noise32 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-8991 Ultra 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/85632372 (accessed 2026-10-19).