Determined. Dedicated. Downtown. Houston's only downtown university with the lowest tuition rate of any public university in Houston. 53 degrees offered; online, downtown or NW Houston. Ultra high-definition, or UHD , and 4K are two terms that are often used interchangeably to denote a monitor or TV that has a resolution of around 4,000 horizontal pixels. As the adoption of UHD continues to grow, we can expect further advancements in display technology that will push the boundaries of image quality and provide even more immersive experiences for viewers. UHD vs. 4K Resolution: What’s the Difference? UHD (Ultra High Definition) and 4K resolution are terms often used interchangeably, but they have some key differences that are important to understand. Both refer to high-resolution display technologies that provide a significant improvement in ... Ultra High Definition ( UHD ) has become a popular term in modern technology, especially in relation to televisions, monitors, and streaming services.