Hello there folks! I am a video producer and editor and I need a better GPU then the one I own now. For now I have Macbook Pro 15 mid-2010 i5 2.4GHz with nVidia 330M. Lately I have been confronted with a graphic issues on this machine. I was planning to buy a new Retina, but then I decided that I maybe want a Mac Pro. I don't have a budget for the new one because I am also buying a new Blackmagic Camera. So, I have an very cheap offer to buy a Mac Pro 1.1 the version with 2.66 GHz Quad Core and Intel GT7300 graphic unit. My question is simple. Is there any possibility for me to buy this machine and to turn it into the powerful giant with a better processor, much more RAM and with maybe nVidia Quadro 4000 GPU. I need these answers very quickly because I need to know what to do. If there is no chance of doing the exact thing (w/ nVidia Quadro 4000), then give me the best possible upgrade for this one... Thanks forward!