To answer your question, you'll get more fps from i3 6100 + GTX 950. If I were you, at this point, I would buy the cheapest H110 motherboard which supports DDR4 ram, a single 8 GB of DDR4 2133MHz memory stick and the i3 6100. After that I'd wait just a bit to see the launch of GTX 1050 and buy that, for the best budget orientated WOW pc. I'm sure it'll come out before Legion is released. All the best!