I'm trying to help my son finish his gaming build. He only plays LOL on a 40" flat screen samsung tv. He still needs, of course, all the expensive hardware: cpu/mb/memory/gpu. He has case,PS & SSD. I was thinking one of the i5's ($150-225 range) but I'm not sure of the difference between all of them. And then MB/ 16GB Ram. Have no idea on GPU, but seems like a lot of positive remarks about the rx470/480. Seems like I should lean to 8gb GPU, in the $200 range, give or take. Is this overkill ? if a smaller budget would work, that would be better.