This pc is meant for decent 720p gaming and some 1080p gaming on low to medium settings. It is completely capable of running far cry 3, battlefield 4, bioshock infinite and many more. It can easily run league and csgo. Any free to play game will also run very smoothly on this pc. Here is a video reviewing the apu. In this video, he is using 2133 mhz ram but in this build, the ram is clocked at 2400mhz, giving a couple more fps to your build. https://www.youtube.com/watch?v=lPdLn_YGEaY
At first i was going to use a psu that came with a case, but after a comment (courtesy to Vagabond) i decided that it's probably better not to be cheap on the psu as many people have warned that a cheap psu can shorten the life of the pc.
The motherboard in this build is currently providing the deepcool gammax 400 cooler which usually goes for $30 for free. This is a complete steal especially when it comes budget build. For $40 you are getting a decent motherboard and a decent cpu cooler.
Since this is an apu build, the 2400mhz 8gb ares ram will provide you with the fps boost you need in those graphically demanding situations. 8 gb of ram for $30 is currently a steal and would be recommended for any ddr3 build, not just this one.
For the storage, you can just go to Newegg and search their $10 section for hard drives. Here's a link to help: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&IsNodeId=1&N=100167523%204024
any questions or suggestions, please feel free to ask or comment!