Hardware Spec Index

Brontix CL-3991 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Brontix · SKU CL3991-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index663 (CPU Coolers scale)
Category rank#26,598
Street price$19
Power12 W
Performance per dollar34.89
Released2020

Specifications

BrandBrontix
ModelBrontix CL-3991 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 30 mm thick
Fans2× 120 mm, up to 2,300 RPM
Pump3,300 RPM
Rated cooling250 W (manufacturer rating)
Noise27 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty5 years

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Cite this page: Hardware Spec Index, “Brontix CL-3991 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/7877591 (accessed 2026-10-25).