The CPU is fine, but Intel HD graphics is the bottom of graphics cards (integrated GPU for handling stuff like your display, movies and other low-level graphics), so you want a dedicated GPU to play games.
But Minecraft/Warcraft are pretty low-req, so I'm not sure if it's necessary to upgrade anything.
MageofBlood391 posted... GameFAQs: Because if all else fails, you can always argue semantics.
Probably gonna get crap for this, but what is the GPU and difference between CPU
GPU = Graphics Processing Unit - your graphics card, the thing that accelerates the display of 2D and 3D graphics.
Higher end CPUs typically have more cores/hyper-threading etc. and are clocked higher, but that i5 will be sufficient for gaming. You will most likely need a new power supply to support a decent CPU - but then a $150 or so GPU will serve your purposes well (could probably go cheaper, but a GPU in that range will allow you to play just about any game at high/max settings with that system).