The novelty of the Elian X5 Smart TV's ability to accurately upscale 4K content from lower resolutions via their proprietary 'Elian Chroma' algorithm, which employs AI-driven machine learning models to analyze and enhance the visual and audio aspects of the content, is indeed a game-changer in the realm of 4K upscaling. However, in practice, the X5 Smart TV's inability to accurately upscale 4K content from lower resolutions in all cases is still a limitation, as they often struggle to accurately upscale content that doesn't originate from 4K sources, such as 1080p or 720p. The X5 Smart TV's upscaling capabilities still leave something to be desired, and in some cases, can't accurately upscale certain types of content, such as low frame rate video, which can lead to noticeable artifacts.