Hardware Spec Index

Brontix CL-3903 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Brontix · SKU CL3903-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index1,033 (CPU Coolers scale)
Category rank#12,848
Street price$39
Power12 W
Performance per dollar26.49
Released2023

Specifications

BrandBrontix
ModelBrontix CL-3903 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 27 mm thick
Fans2× 120 mm, up to 1,700 RPM
Pump3,200 RPM
Rated cooling250 W (manufacturer rating)
Noise28 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsCPU TDP, PPT and Turbo Power ExplainedAMD AM5 Socket

Similar CPU Coolers

ModelBenchmarkPriceCompare
Teralux CL-6275 Max Dual tower Air CPU Cooler1,723$89Compare
Brontix CL-6440 Core 240mm AIO Liquid CPU Cooler1,144$39Compare
Caldera CL-6487 Core Dual tower Air CPU Cooler1,369$79Compare
Brontix CL-3961 Ultra Dual tower Air CPU Cooler2,067$159Compare
Brontix CL-3415 Max 420mm AIO Liquid CPU Cooler2,224$179Compare
Caldera CL-3693 Ti Single tower Air CPU Cooler1,248$49Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Brontix CL-3903 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/7946607 (accessed 2026-10-22).