In most tower-type CPU heatsinks, central bent portions of heat pipes pass through the CPU base, while their arms pass through ends of an aluminium fin-stack. Noctua plans to improve on that, without trying out expensive solutions such as vapor-chamber plates. Called Cube-base heat pipes, Noctua's solution include heat pipes that originate at the base, shooting straight up through the central portion of the aluminium fin stack, for a more even distribution of heat. Noctua implemented the cube-base heat pipes on a variation of its popular NH-U14S heatsink, which it displayed.