Using R9 290X, all maxed out.
Runs at maximum fps at all times on all modes.

But I turned on v-synchronize, so it follows my monitor's max refresh rate @ 144hz.

My friend's i7 3770 + HD7970 also runs as good.

It's enough.
i5 is already enough for gaming
i7 is for both gaming and rendering

Hi, I m using i3 4160k with Asus strix gtx750 2gddr5
Running at 1080p, dota2 reborn setting max out.
I got average fps 90. It's never drop below 60 during intense fight. Max fps is about 120 to 130.
I on a tight budget so decided to build an i3 gaming rig
Turns out result are satisfying especially playing dota2.
If over clocked the gpu can even further boost the fps
Hope this helps.