MojoKid writes: There's no doubt that Dell's new XPS 13 notebook when it debuted earlier this year, was very well received. Dell managed to cram a 13.3-inch 3200x1800 QHD+ display into a 12-inch carbon fiber composite frame. Dell has now brought that same InfinityEdge display technology to its larger XPS 15, which the company boasts has the same footprint as a 14-inch notebook. But Dell didn't just stay the course with the QHD+ resolution from the smaller XPS 13; the company instead is offering an optional UltraSharp 4K Ultra HD panel with 8 million pixels and 282 pixels per inch (PPI). The 350-nit display allows for 170-degree viewing angles and has 100 percent minimum Adobe RGB color. Dell also beefed up the XPS 15's internals, giving it sixth generation Intel Core processors (Skylake), support for up to 16GB of memory and storage options that top out with a 1TB SSD. Graphics duties are handled by either integrated Intel HD Graphics 530 or a powerful GeForce GTX 960M processor that is paired with 2GB GDDR5 memory. And all of this squeaks in at under 4 pounds.