ANSWER:

For productivity tasks (MS Office, watching DVD and Blu-ray) HD4000 would be fine.

For gaming, get a $40-$45 discrete GPU until you have money for a serious card.

Bottom line: There’s no reason to decide whether you need a discrete graphics card until you buy the Core i5 and see HD4000 performance for yourself.

by Ben Voigt from http://superuser.com/questions/420762