RabidApocalypse :
6300. Only because the i3 is only a dual core, which will hold you back in most games. If you ever plan to buy an Intel CPU that is an i5+, always go for intel. Otherwise, AMD is a solid choice on a budget. Good luck building the PC!
That's not true. The I3 6100 is pretty powerful for only being dual core.
I'm running one with a 750 TI SC and 8gb of ddr4, and most every game i play is getting 60 FPS on medium or high settings.
(Fallout 4 with medium settings and extended draw distances, and GTA V with high settings except textures.)
That being said, go for the I3 for upgrades. An I7 6700 is what I'm gonna get down the road when i can't play modern titles anymore.