It sucks very bad. I bought DELL INSPIRON 15Z 5523 on September 2013. By Jan 2014 my OS crashed. Calling customer care is a horrible situation. They will say all cock and bull stories to make money out of you. I will not recommend this particular model to any as I have faced hel lot of problems with it and WINDOWS 8 that is one more thing which is not user friendly
I also have problems with the wifi randomly dropping the connection (says limited connectivity) you have to forget the connection and then make it again to get it back. This is very frustrating. Other wifi devices in the same room as the 15z have no problems at all.
I have had the 15z for almost two months, and the connectivity problem exists as well, on virtually any network that I use - random disconnects that are only remedied by hibernating/restarting the computer. It is very annoying!
Inspiring. Ultrabooks have found their way into Dell's Inspiron family. The all-rounders of the past now benefit from lower weight and longer battery life, in addition to the good performance. We examine whether the ultrabook measures up to the broad multimedia class.