I just built my first rig http://pcpartpicker.com/p/32KLC and everything has come in besides the GPU and the mouse. I went ahead and decided to build it, install windows, latest drivers etc.. and now that thats all complete can I go ahead and download steam and/or games in general? I would like to do that now so when my GTX 770 comes in I could just plop it in, setup and update and play. Would there be any issues with the games I download now when I put the GPU in in a few days or so?