littleleo :
The FM2+ is not a good way to go for a good gaming rig there is no real good upgrade path. Even AMD is not supporting it going to the ZEN AM4 later this year. The CPUs popped out are to just tie AMD homers over until late October. Not sure where you are getting a decent hard drive for $30 hope it isn't a refurbished. A 500GB hard drive is $40 wholesale, I do think you can get an 8GB kit for less then $50, but I don't know a good power supply for $30. If you are making a real gaming system you need to plan for future upgrades (like adding a GPU) and any PS you can buy for $30 isn't in the conversation. And a $20 case... An APU rig is for low-end to low medium gaming. It may play the old games okay but why spend money on a dead-end platform? If you like AMD wait for ZEN you'll have lots of options if what we have heard so far is true.
...seriously? Try looking at sites that sell computer hardware.
http://www.amazon.com/gp/product/B00272NHP4/ref=olp_product_details?ie=UTF8&me=
http://www.newegg.com/Product/ProductList.aspx?Submit=Property&Subcategory=14&N=100167523%20600003290%20600003306%20600003321%20600003312%20600003326%20600237350%20600003298%20600003311%20600003279%20600003316%20600003288%20600003300%20600003280%20600543907%20600003297%20600003307%20600003289%20600003324&IsNodeId=1&IsPowerSearch=1&OEMMark=0,N,1
If you can't find a new HDD under $30, you aren't even looking. There are decent power supplies around $30. The Corsair CX 430 is a popular one. It isn't the best PSU out there, but it isn't terrible, and there are others at a close price that frequently run on sale.
The poitn about not having an upgrade path is a mute issue. The majority of systems will never have a CPU upgrade even if there is an upgrade path available. Typically because the cost of upgrading out weighs the reward, unless you have an extremely low-end CPU to begin with. There is no legitimate reason short of a CPU failure that someone that owns an FM2+ Athlon X4 CPU or A10 APU will ever need to upgrade it. They will need to upgrade to a new system eventually, but there isn't any reason to upgrade on the same platform. Most users that buy Intel have the same situation, as there is little reason to ever upgrade a Core i5 or Core i7 to a higher-end CPU on the same socket. Chances are before there is a legitimate reason for a CPU upgrade, the system will be several years old and a full system upgrade will make more sense. There is also no reason to have a dedicated GPU on an APU, as not having to buy a graphics card is the entire reason for the APUs existence.
You seem to have completely missed the comment I was making was for being a low-end budget gaming PC using the 7870. Yes, more expensive cases, PSUs, hard drives and other faster hardware is nice to have, but on a budget APU system, there is little reason to go over what I was listing. The reason someone should buy it, is if they don't have $400+ to spend on a better computer, being the entire reason to get a budget PC in the first place. For those users, Zen will probably make little difference.
Also, just to point it out, the
ABSOLUTE WORST thing anyone ever building a PC can do is build it with future upgrades in mind, as it will always end badly and cost more than building the entire system at the same time. The idea of a future proofed, upgrade able PC is a myth that tricks people it to making poor choices when buying a PC, and should never be recommended.