That's not a gaming pc. That looks more like a gaming-capable Workstation. Absolutely overkill CPU (games are seldom cpu bound), and too much RAM (games don't care).
I suggest a glance at Logical Increments [0], which is definitely biased towards gaming, to see what you can do at a given price point. Note that just because of the gsync fiasco and the cloud-connected drivers nonsense, I'd gravitate towards an AMD GPU if I had to buy now.