1. I want to game at around 720p if possible with 25-40 fps, 2013 games at medium. (Example: Bioshock Infinity Med-high, Fallout 3/New Vegas-High, GTA V Low-Medium) (I have a laptop with intel hd 4600 that can run fallout 3 at medium/High settings)
2. I have no problem with used parts.
3. I need everything except the operating system, also optical drive is optional.
4. (Extra) I am planning on upgrading to a higher graphics card later.