OKay well I have a couple different issues/questions. Hope I can get some good feedback. I have a mac pro with 2Gb of Ram (2X512). I still have 4 Slots open. First off: Is it worth buying another 2X1GB or possibly 4X1GB? I am CONSTANTLY converting files. Retagging the meta-data (which takes a long time on files close to 4GB, which most of mine are. Transferring files between my HD's and downloading a good amount all at the same time. Would I see a big improvement in any of these areas if I were to upgrade? Second: If so, then do I play it safe and buy apple's $$$ Ram, or take my business elsewhere?