How is the Cintiq Companion different from desktop Cintiqs?

The Cintiq Companion is a combination of a Cintiq Pen Display and a powerful PC using latest Intel® Core™ processor technology and Windows 8.1 operating system. (Windows® 7 is available on the Intel® Core™ i7 with Intel® vPro™ technology (DTH-W1310E) configuration.) It allows creative professionals to draw, edit images and create using their favorite professional software, e.g. Adobe® Photoshop® or Autodesk® SketchBook® Pro while working anywhere. Desktop Cintiqs displays require an attached computer and are not intended for mobile use.