What's a nice cheap gaming computer?

So i'm looking to save up for a nice gaming computer. I want it to be fast and be able to have a lot of space and games installed(Lol, Bo2, BF4, Minecraft, Tf2 to name a few) Mainly I want it to be an affordable price though( 400-600 dollars) Also maybe better than the Minion!

There are lots of videos in youtube helping you with a cheap build. Try and search for yourself its faster.
Anyway, here are some of it.

Please search on Google and find the best one.Before going to buy it, please read the customer reviews.

http://www.meshcomputers.com/