It doesn't matter. Even a A8 can't keep up with an i3 in pure computing power. The only reason to get an AMD APU is for the integrated graphics if you don't want to (or can't) use a discreet card.
As Dj said the only good thing about the APU's is they have very good integrated graphics much better than Intel. In terms of just CPU power the I3 is much faster and more efficient than any of the AMD APU's.