These are so inexpensive, and any model will do. Here, I chose the Sony DRUV200A/BR DVD/CD, which is $29.99. Many are available for $15-20, so if you want to save even more money, I see no harm in going with an off brand. I stuck with the Sony because I've had really good luck with these burners.
For some gamers, the onboard sound that comes on the motherboard may not be enough. If you have just plain 2.1 channel speakers, I probably wouldn't spend the money on this unless you just have some left over. If, however, you using a gaming headset or have a 5.1 or 7.1 computer speaker system, then you will definitely want to buy a separate sound card, which pops right into a PCI slot. I chose the Creative Sound Blaster X-Fi Xtreme card, which will improve your sound experience quite a bit. For an aditional $30, you can get the gaming version, which offers an even better sound targets specifically at the in-game sound.
Finally, we need a case to put all of these nifty components in. Make sure that the case you select supports the size motherboard that you chose, in this case, ATX. The design and style are up to you. Beware of the really cheap cases that run between $15-30. I have read that many of them transmit static electricity much easier, and there are horror stories of people shorting their motherboard out through simply touching the case on those dry, winter mornings. I chose the RAIDMAX Tornado ATX-238WY model, as it seems to have everything that I need.
When you add the prices of all of these part up, the total is $552.44. In many cases, you can find free shipping online; otherwise, it will be a little over $500. Your price could be cheaper than this if you shop around, which is something I didn’t really do for this article.
The other thing you need to think about is how you are going to put Windows on it. If you have a copy of Windows that you are able to use, then you are set. If you need to buy a copy, then that is going to cost you a few hundred more. Try to get an OEM version from an online computer retailer.
You'll also have to think about a gaming mouse and keyboard, if you don't already have one. If you are replacing a computer, you should be able to use those peripherals from that.
Overall, this will be a great gaming machine with power, reliability, and speed. Make sure that you keep all of your warranty material together, as you will need it in case there are any issues within the first year.
For up-to-date recommendations of parts lists to build your own home or office computer, file server, or gaming PC, see our list of build guids here.