Need some advice. My brother wants to buy a cheap laptop for the most normie shit ever. You know the deal. Read/send emails, office suit (word, excel), checking facebook/twitter/whatever, maybe the occasional movie.

So he was considering this cheap laptop, don't even remember the specifics, just that it was an Intel Pentium and I remember suggesting that he upgraded to at least a Core i3. But is it worth it? Are Core i3 better anyway or you need to go up to Core i5 and better to really see an improvement? Any help appreciated.