Just ordered another 2GB of RAM from Crucial for just over $200.00 with tax and shipping. This will bring me up 5 GB, the original 1 GB that came with the MacPro, and the 2GB, also from Crucial, that I installed when I first got my MacPro. Out of curiousity I looked back to see what I had paid for that memory, which I bought last September. $400.00 , what was I thinking . I remember feeling lucky at the time because just after I bought that RAM Crucial raised its prices.