I am building a gaming rig, but I have no clue where or what I need to do. I want a really fast, overclockable CPU and GPU. I know I want the Intel i5 2500k. I would prefer a computer with a mouse, keyboard, and possibly a monitor.(monitor is no biggy, I can just buy one off of craigslist) My price range is ranging from $1250-$1500. Please help me out on this, good feedback would be much appreciated!