AMD Apu are good for bang for bucks ... intel i3 ? joke? under Intel i3? worse joke? even a second hand A10-5800k is golden
proc part is on par with the Phenom II X4 965 BE wich isnt half bad and the GPU part is way more reliable than inte HD even with haswell (if the price was right ...)
the 3rd system in my system spec cost me near your price of 447$ or even less, allways consider 2nds hands specially when they give you the "inclued original shop bill and 1yrs and a half warranty"
dont misunderstand me i find intel good but on the lower priced cpu they are good for fileserver and sometime movies ... but APU does it just ... better
with the A10-5800K i can run on the APU with med to high setting not only old games but nearly all the games i play, also you can add a 6670 to hybride CF with it but i wouldnt recommende it ... since a disabled 7660D with a "real" 7950 in place is more profitable (also that 7950 make my APU rig cost me 150$ more than yours)
i know good deals are not easy to find, and pc shop tend to say "new is better mor warranty and less hassle", well ... i never run into a problem i couldnt solve with that rig or any of my other rigs.
I'd rather have the Intel. You don't need a better gpu if you aren't playing games and the cpu is fast enough to play HD content without acceleration. The AMD would only be faster at video acceleration, the Intel will be faster at absolutely everything else.
and a normal user wouldnt notice it since what he want is video and internet. but with the APU he would have a upper hand on the "pentium G" if it comes to light gamming without dedicated GPU