What is an Ultrabook? An Ultrabook is a laptop inspired by Intel. Ultimately it is a thin, fast and long lasting laptop. The z-height, or thickness, has to be less than 21.0mm for Ultrabooks with screens bigger than 14” or less than 18.0mm for those with screens 14” or less. They also feature high performance 2nd or 3rd Generation Intel Core processors and can awake from sleep or hibernate mode in less than 7 seconds. One last feature is Intel’s Smart Connect Technology which helps your Ultrabook stay up to date with automatic updates to your e-mail, social networks and more. You can also expect long battery life ranging from 5 to 8 hours. Interested? Check out Dell Ultrabooks.