Okay, I've done the research on upgrading the power supply and graphics card on this model. I've read how many people experienced a variety of levels of success. However, nobody mentioned the potential difficulty with changing out the power supply. I'm trying to just change my PS, and low and behold, a spare cable is attached to the bottom of the bracket for the media device reader! It is completely latched around so that the only real way of removing the wire requires additional removal of components or cutting the wires!
Anyone else experience similar difficulties with this machine in terms of upgrading? Was it labor intensive for you? I can do basic stuff, but I now hesitate to go any further (which I suspect is what Dell wants: no competition for higher end products).