notchisme :
Oh okay then dont all you need to do to add the graphics card is to insert into the motherboard the install the drivers of needs?
Basically, yes. Don't forget to move the video cable from the motherboard port (where it is probably plugged into now) to the gfx card's port. Be sure the gxf card you get has the correct output port for the monitor connection you're using; i.e. HDMI, DVI, Displayport, VGA...