Dell XPS 12 (2013)The XPS 12 is built from black carbon fiber and is lined with precision-cut aluminum. The XPS 12 has a screen that rotates within its aluminum frame, so it can be used either as a tablet or a traditional clamshell laptop. Two catches on the top and bottom of the frame hold the screen firmly in place. At 12.48 x 8.46 x 0.59-0.79 inches, the XPS 12 is a tad bigger than the VAIO Pro 11 (11.22 x 7.78 x 0.68) and the Yoga 11s (11.73 x 8.03 x 0.67). Running Intel's fourth-generation 1.6-GHz Core i5-4200U Haswell processor with 4GB of RAM, the XPS 12 delivers smooth and speedy performance. The XPS 12's battery lasts an impressive 9 hours and 24 minutes. With a $1,199 starting price, the new XPS 12 is somewhat more expensive than its competitors.