One problem is the CPU in this computer is actually an APU. APUs are designed for low cost general purpose computers, not for gaming. Even if you add a videocard to this system you will not get good game performance. This is not a good gaming system.
Look for an older Intel quad core system, something with an i5 2400 or similar Sandy Bridge era CPU. If you don't know what "Sandy Bridge" refers to, google it.
You are better off looking on the used market for a 2nd gen or higher i5 or i7 with a fairly recent graphics card (minimum of around gtx 660 or AMD 7850).
http://www.ebay.com/itm/Custom-Built-Gaming-PC-Desktop-Computer-New-System-Quad-Core-4GB-Wifi-HDMI-Fast-/232372305374?hash=item361a77fdde:g:lfAAAOSwRUhY96Zc Will this run big games like DayZ, GTA 5, or Rust?
One problem is the CPU in this computer is actually an APU. APUs are designed for low cost general purpose computers, not for gaming. Even if you add a videocard to this system you will not get good game performance. This is not a good gaming system.
Look for an older Intel quad core system, something with an i5 2400 or similar Sandy Bridge era CPU. If you don't know what "Sandy Bridge" refers to, google it.