I want to build the PC for my architecture based computer application. so I need to know that should I select xeon E3-12xx series or core i7(3770 or 2600 or 3820) processors. will I be able to run Auto CAD and 3D max like software smoothly with xeon processors??? n does nVIDIA quadro series GPU's are more compatible with xeon processors or with i7?? and then please suggest compatible mother board and RAM for xeon E3- 12xx series.