 Zenbook are a family of <unk> – low @-@ bulk laptop computers – produced by Asus . The first Zenbooks were released in October 2011 , and the original range of products was amended and expanded during 2012 . Models range from 12 @-@ inch laptops , featuring power efficient components but lacking connectivity and having only integrated graphics processors , to 15 @-@ inch laptops with discrete graphics processing units and optical disc drives . Most ( though not all ) Zenbooks use Intel Core ultra @-@ low @-@ voltage processors and Nvidia GPUs when integrated graphics are not used . Asus introduced new models with touch screens to take advantage of Windows 8 after its release in late 2012 . Most models drew comparisons to the Macbook Air . The most recent release in the Zenbook line is the upmarket Zenbook Infinity <unk> series . 
