Hardware Spec Index

Brontix CL-3821 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Brontix · SKU CL3821-ULTRA · Released 2026 · Updated 2026-10-21

Key facts

Benchmark index1,082 (CPU Coolers scale)
Category rank#8,740
Street price$39
Power12 W
Performance per dollar27.74
Released2026

Specifications

BrandBrontix
ModelBrontix CL-3821 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 27 mm thick
Fans2× 120 mm, up to 2,400 RPM
Pump3,400 RPM
Rated cooling250 W (manufacturer rating)
Noise30 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

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Cite this page: Hardware Spec Index, “Brontix CL-3821 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/1295010 (accessed 2026-10-21).