Hardware Spec Index

Zephyra CL-3940 Plus 420mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3940-PLUS · Released 2023 · Updated 2026-10-18

Key facts

Benchmark index1,945 (CPU Coolers scale)
Category rank#14,179
Street price$119
Power17 W
Performance per dollar16.34
Released2023

Specifications

BrandZephyra
ModelZephyra CL-3940 Plus
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 2,100 RPM
Pump3,100 RPM
Rated cooling330 W (manufacturer rating)
Noise36 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-3940 Plus 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/15959570 (accessed 2026-10-18).