$1300 Budget Gaming Computer

Approximate Purchase Date: End of July or August
Budget Range: $1300

System Usage from Most to Least Important: Gaming (Diablo 3, LoL, CoD) , Internet, Movies

Parts Not Required: Keyboard, Mouse, Speakers, Monitor

Preferred Website(s) for Parts: NewEgg, MicroCenter, TigerDirect

Country: USA

Parts Preferences: by brand or type : No preference

Overclocking: Maybe

SLI or Crossfire: Maybe
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Don't have any parts really selected which is why i am asking what to get, this is my first build as well.