What starts at $900 and has a removable display that can act as its own Windows 8 tablet? Dell’s XPS 18 all-in-one PC. The display itself is 18.4-inches in size with a resolution of 1920×1080. The base-$900 model includes a dual-core Intel Pentium ultra-low-voltage CPU with a 320GB HDD. It will be available soon, and can be configured to have more powerful hardware inside.