Dell XPS 27 20XPSo27T-2143BLK 27-Inch All-in-One Touchscreen Desktop (Black)
The only one of its kind: Wide-Quad HD gives you 78% more pixels overall and 33% more pixels per inch than Full HD, with an eye-popping 2550x1440 resolution (compared to 1920x1080). It's the highest resolution you can get on a Windows 8 touch all-in-one.