Hardware Spec Index

Zephyra CL-3964 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3964-ULTRA · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index972 (CPU Coolers scale)
Category rank#20,129
Street price$39
Power12 W
Performance per dollar24.92
Released2023

Specifications

BrandZephyra
ModelZephyra CL-3964 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 27 mm thick
Fans2× 120 mm, up to 2,400 RPM
Pump3,400 RPM
Rated cooling250 W (manufacturer rating)
Noise30 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

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Cite this page: Hardware Spec Index, “Zephyra CL-3964 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/3579382 (accessed 2026-10-24).