FX6xxx are a terrible idea. Significantly outperformed by the i3 6100 or i5 2400 in games due to its very weak single core performance. It also uses end of life motherboards and,RAM.
I would opt for the i3 6100. I am yet to see a benchmark where this CPU cant acheive a minimum of 50 fps. It also uses a current motherboard socket and RAM giving much better upgrade options in the future.