Hardware Spec Index

Zephyra CL-9921 Ultra Single tower Air CPU Cooler

CPU Coolers · Zephyra · SKU CL9921-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,161 (CPU Coolers scale)
Category rank#13,606
Street price$39
Power3 W
Performance per dollar29.77
Released2021

Specifications

BrandZephyra
ModelZephyra CL-9921 Ultra
TypeSingle tower air cooler
Heat pipes4× 6 mm copper
Height155 mm
Fans1× 120 mm PWM, up to 1,500 RPM
Rated cooling180 W (manufacturer rating)
Noise27 dBA (max)
RAM clearanceUnrestricted
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

Related guides

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

Similar CPU Coolers

ModelBenchmarkPriceCompare
Zephyra CL-1981 Ultra Single tower Air CPU Cooler2,132$149Compare
Zephyra CL-7882 Edge 240mm AIO Liquid CPU Cooler1,361$49Compare
Caldera CL-3736 Ti 420mm AIO Liquid CPU Cooler2,403$189Compare
Brontix CL-5808 SE 240mm AIO Liquid CPU Cooler637$19Compare
Brontix CL-1617 Core Single tower Air CPU Cooler1,380$69Compare
Brontix CL-3928 Ultra Single tower Air CPU Cooler982$29Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Zephyra CL-9921 Ultra Single tower Air CPU Cooler”, https://vextor7.com/item/96838200 (accessed 2026-10-26).