Hardware Spec Index

Zephyra CL-3903 Prime 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3903-PRIME · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index799 (CPU Coolers scale)
Category rank#31,430
Street price$29
Power12 W
Performance per dollar27.55
Released2019

Specifications

BrandZephyra
ModelZephyra CL-3903 Prime
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 30 mm thick
Fans2× 120 mm, up to 2,200 RPM
Pump3,000 RPM
Rated cooling250 W (manufacturer rating)
Noise31 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty5 years

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Cite this page: Hardware Spec Index, “Zephyra CL-3903 Prime 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/8720148 (accessed 2026-10-19).