For gaming I suggest AMD by far because of the higher perfomance OVERALL and are usually pretty cost effective in the value for money sector.

Also Intel makes some pretty SH## graphics cards which is a con if you are buying from them, while AMD graphics cards may work better with AMD processors giving you optimum performance for gaming.

If you are thinking about overclocking I have had more trouble with intel processors than AMD which is relatively easy to overclock.

So in my opinion AMD is best by far