just get an AMD 5350 APU.

4 or 8 cores at 2+ghz plus a very decent gpu. with a high end motherboard you get it for $100! and there is one itx motherboard that cames with a 20V input plug to not even need a psu!

best part: mine with a ssd and a hdd streaming movies to the tv in 1080p (supports 4k but i get tearing) de will only consume 35W!