Gameing build for 800$

looking to build a new gaming pc seeing how i have had the same platform since 2005 lol its been upgraded as much as possible and starting to see lag in newer titles so what i am asking for is a complete parts list for around 800$ everything as far as the tower goes do not need keyboard mouse headphones monitor or any other accessory just need a tower build if you could help thanx does not need to be extreme build just enough to be a few years future proof would like a amd build 

Here's a build to consider: