Any ideas for parts?

Get some ideas from youtube videos. Check out Tech By Matt's $100 gaming pc. If i were you i would get a already working system. (Maybe a dual core with like 4gb of ram) and just add the best graphics card you can get with the rest of the money.
 


I know that's what im doing. And techbymatt fakes his prices
 


Is there any other dell optiplex that atleast has a core2 quad and 4gb ram only for $40-$60?