I built this computer because my laptop was crapping out and thought it would be fun to give it a try to build one. It took me 5 months to gather all the parts while looking for the best deals I could. With everything together it cost me (out of my own pocket) $308 which includes a fan splitter cable that is not listed below. The Hard drive was given to me as a Christmas gift from my parents, so if I had to buy it the build would have been around $420. The Hard drive I was looking at was $60; so if I were to buy the HD, I would have still been under my $350 budget.
I plan on getting another 8 GB of RAM, possibly a video card (which one would work great with the 5800k?) and possibly a 3.5 peripheral (whatever that may be). I had to buy a cheap crappy keyboard that cost me $13, I already had the monitor, mouse and speakers. I will eventually get a wireless keyboard. I put Linux Ubuntu 13.10 and will probably never go back to windows.
I can now say that I have the bug and already want to build another computer in hopes to selling it. I also want to try and overclock this computer to around 4.0-4.2 ghz. I just have no idea how to do it.
Anyways, I am very happy with this build and want to build another computer soon.
(Edit). I added a Corsair 430W ATX12V in replacement of the coolmax V400 and it is really nice. It's quiet and I love that it is more ventilated. Still under my $350 budget.