This range came in 4 different processor speeds and features the new Kaby Lake Processors. It came in 2.3GHz i5, 3.0Ghz i5, 3.4Ghz i5 and 3.6GHz i7.
This range is known as the 4K model, but only the top 3 specs came with the 4K display (the 2.3Ghz model was standard 1080p).
The base spec 2.3Ghz models have a 21.5" 1920x1080 LED-backlit 16:9 widescreen IPS display, whereas the higher spec models have a 21.5" 4096x2304 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 4K" display, both with a fully laminated glass cover and an anti-reflective coating. The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.