computer for 500€

Getting an APU is a waste of money if you have a discrete graphics card. You're much better off getting an X4 860k, which is a similar (but slightly better) CPU without the integrated graphics for less money (and would work with that mobo). Personally, I'd recommend spending a bit more money and getting an i3-6100 (would require different motherboard, and DDR4 RAM).
 

u just save me 30€ ty men! i love u :)