Built this to take with me wherever I go for gaming wherever a suitable TV or monitor is available. At home I toss it up on the 65" 4k and play. Currently haven't had any issues playing games in 4k at ultra settings, but have only played Shadow of Mordor and Borderlands 2. Everything in the case is silent except for the GTX 980, which when gaming in 4k will sometimes generate minimal noise. I can't hear it over my speakers even when playing at night (I keep the volume low so the roommate doesn't mind), only when muted.
I built for just under $1400 with holiday sales and rebates.
Firestrike Ultra Result http://www.3dmark.com/fs/6966400