Hardware Spec Index

Zephyra CL-6521 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Zephyra · SKU CL6521-ULTRA · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index648 (CPU Coolers scale)
Category rank#15,637
Street price$19
Power12 W
Performance per dollar34.11
Released2020

Specifications

BrandZephyra
ModelZephyra CL-6521 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 38 mm thick
Fans2× 120 mm, up to 1,500 RPM
Pump3,200 RPM
Rated cooling250 W (manufacturer rating)
Noise32 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty5 years

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsCPU TDP, PPT and Turbo Power Explained

Similar CPU Coolers

ModelBenchmarkPriceCompare
Brontix CL-9712 Edge Dual tower Air CPU Cooler1,878$129Compare
Teralux CL-9906 Edge Dual tower Air CPU Cooler2,480$189Compare
Caldera CL-8287 Ti 360mm AIO Liquid CPU Cooler1,129$39Compare
Caldera CL-4817 Ti 360mm AIO Liquid CPU Cooler1,838$99Compare
Teralux CL-4398 SE 360mm AIO Liquid CPU Cooler2,480$199Compare
Brontix CL-7476 XT 280mm AIO Liquid CPU Cooler1,006$29Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Zephyra CL-6521 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/6922648 (accessed 2026-10-24).