The processor is considered slower for the majority of tasks compared to the the Intel I-3. As such, it would run slower then a comparable system with an Intel processor.
One other thing though... if you want this laptop to last him awhile, spend the money now to get a slightly better system. Otherwise it will become obsolete sooner rather then later which means buying a whole new system. I am actually not much of a laptop person (I have a desktop for gaming and a netbook for on the go work or school) but that is what I do for my desktops. Next upgrade I will build a new desktop with the top of the line items and then get a tablet for on the go. This desktop can STILL play any game coming out and I have had it for 5+ years already. Did it cost me more at the time? Yep... but I feel like I saved money in the long run.