Apologies if this duplicates the thread about the $650 ma356 that just got posted. I'm not very knowledgeable regarding Pros. I have the option of picking up a Mac Pro from 2006, which uses the Woodcrest processors, I believe. My employers are selling it, and it would be cheap though I do not have a final price yet. I have never owned a Mac Pro, but am thinking I might pick this one up. I was always a laptop guy, but got a Mini three years ago and the world didn't end. So I have a decent monitor already. I'm not a power user, but this would give me the chance to upgrade my Aperture/PS speeds, do some light gaming and other stuff that chokes the Mini. Is this still a competitive computer? I believe I can add up to 32 GB RAM, right? Also, what is the highest level of nVidia/ATI/other GPU I can put in there? Finally, are the CPUs upgradeable? Thanks for any help you can give me!