I think that just about any combination these days will do the job MUCH better than we imagined just a few years ago. I got a Gigabyte mobo a few years ago with a Intel i5-4570 running at 3.20GHz. I sometimes sneak a look at the cpu graphs and other than when I'm converting a video or something equally cpu intensive, the graph seldom gets about 5% of use. And with 8gig of RAM I don't think I've ever gone into swap.
My only complaint with the gigabyte board is that it doesn't recognize my logictech "gaming" keyboard on boot. I think it might be the fact that it has a usb port on the keyboard. So, if I want to access the bios I need to plug in a different keyboard.