I don't do games, so my quad core AMD may do for a while. They must be hitting some limits of what is possible, but I guess they can keep adding cores. I like a quiet PC, so I'd go for one that doesn't use too much power.
I found specs here
https://ark.intel.com/products/family/123588/Intel-Core-X-series-Processors
Yeah I agree A quiet PC is good. I have a Macbook Pro with an i7 and all the mod cons for my Video editing and photo work. Mac's just dont cut it for games, so PC upgrade is needed haha !