So I bought an iMac i5 with 4gb RAM. What can I say, obsolutely awesome machine. These display is incredible. Blazing fast and beautiful graphics. Now I only got the 4GB RAM with intention to upgrade to 8GB myself. However, I'm runnig Vista 32-bit in Boot Camp. I would assume that if i upgrade to 8GB, 32-bit vista will not run? 4Gb to 8Gb is not a huge deal, but it would be helpful once I get all my photography gear up and running, although it is more of a hobby than a profession so a slight increase in speed wouldn't be too important. Thanks guys.