Both of those processors will require discrete graphics and use more power than say a standard 4790 or a 4790k....how many cameras are you running? What resolution?
My advice would be none of those...that extra power will cost you over the years-its not just the higher tdp on the cpu, but the video card you will need as well-it will add power consumption, hear, noise (if not fanless) and a point of failure....simply buy a dell optiplex 7020 or 9020 with the 4790 from the dell outlet when they are on sale for about 500 or less.
