Hardware Spec Index

Brontix CL-9721 XT 420mm AIO Liquid CPU Cooler

CPU Coolers · Brontix · SKU CL9721-XT · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index2,467 (CPU Coolers scale)
Category rank#8,149
Street price$199
Power17 W
Performance per dollar12.40
Released2023

Specifications

BrandBrontix
ModelBrontix CL-9721 XT
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 27 mm thick
Fans3× 140 mm, up to 2,300 RPM
Pump3,300 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, “Brontix CL-9721 XT 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/31679953 (accessed 2026-10-22).