Re: No nVidia = no CUDA = No deal
The new Dell XPS 15 9530 (aka Precision M3800) has a QHD+ (3200x1800) touchscreen and optional Nvidia GT 750M.
2013 seems to be the year for high DPI on Windows. See http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/735500-list-very-high-res-high-ppi-laptops-1080p-screens.html