Xiaomi TV Boxes (like the popular 2nd & 3rd Gen S models) offer 4K HDR/Dolby Vision, Quad-Core CPUs, 2GB RAM, Google TV, Wi-Fi 5/Bluetooth 5.2, and ports like HDMI 2.1, transforming TVs into smart hubs with apps, voice control (Google Assistant), and built-in Chromecast, with the main difference being more storage (32GB) in the 3rd Gen vs 8GB in the 2nd Gen.