Hardware Spec Index

Brontix CL-3903 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Brontix · SKU CL3903-ULTRA · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index1,019 (CPU Coolers scale)
Category rank#38,710
Street price$39
Power12 W
Performance per dollar26.13
Released2023

Specifications

BrandBrontix
ModelBrontix CL-3903 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 38 mm thick
Fans2× 120 mm, up to 1,500 RPM
Pump2,900 RPM
Rated cooling250 W (manufacturer rating)
Noise24 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

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Cite this page: Hardware Spec Index, “Brontix CL-3903 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/12809255 (accessed 2026-10-25).