yup i assymble them my self. did you notice those clips at back panel and drives bracket? i rip it from a dell box ... the dell was my first very own pc , i gave it to my sister already. @cip6192, you mean the quadcore? upgrading to quadcore is very expensive for now coz you have to upgrade your mobo too, for me instead of upgrading to quad, i better spend it to more storage, ram and/or buying sli graphics since my mobo is sli ready.