Hardware Spec Index

Zephyra CL-3921 SE 280mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL3921-SE · Released 2025 · Updated 2026-10-26

Key facts

Benchmark index996 (CPU Coolers scale)
Category rank#12,003
Street price$39
Power13 W
Performance per dollar25.54
Released2025

Specifications

BrandZephyra
ModelZephyra CL-3921 SE
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 38 mm thick
Fans2× 140 mm, up to 2,200 RPM
Pump3,000 RPM
Rated cooling280 W (manufacturer rating)
Noise33 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-3921 SE 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/13622894 (accessed 2026-10-26).