Hi Dave! Both models are part of the Crystal UHD line featuring the Crystal Processor 4k, Crystal Display, and 120 Motion Rate. When stepping up to the TU8000 you will be able to utilize additional features such as the Smart Remote with built in Voice Assistant allowing you to control your TV with your voice through Bixby, Google, or Alexa. You also gain the Ambient Mode feature, with Photo and Music Wall giving you more ways to use your TV. Finally, the TU8000 gains additional connections, with 3 HDMI and a composite (Yellow, White, Red) connection. ^Tim