That's a good rig for run of the mill 1080 gaming. It will not do for 4K UHD.

This should turn in the usual framerates found in 970 reviews.

But that PSU is a TRIPLE RAIL ( http://www.newegg.com/Product/Product.aspx?Item=N82E16817438005 ) so you can't be sure it will stand up. Try a single rail. The total Watts was fine.