I've been looking at buying a Mac for some time now and recently decided the iMac was the way to go. Now I'm not sure whether the new model suits my needs better than the old, so I was wondering if somebody could give me some advice on this. What I'm going to do with it: - record audio with an external audio interface - use Cubase or Logic - use an external full-hd monitor (dvi and hdmi inputs) - use an external FW800 harddisk - playing or editing hd-video (editing is not important, but it would be nice) A few questions: Does DDR3 and higher memory bandwidth give me any advantage? I think recording audio isn't that hard on the memory, besides using samples (which I won't besides some drum-sampling instrument like ezdrummer or addictive drums). Does the shared video memory affect overall performance? Or is it just like having less RAM? I know the old model has an FW400 and a FW800 port, but are they on the same bus? I heard someone say something like that, which would mean that my external harddisk would run on 400 when I connect a FW400 interface to the 400 port. I tried my best to read as much as I could about Macs and specs over the past few months, but I feel like I know too little about above mentioned issues to decide on the new versus the old iMac. One more thing , money does count. I really prefer my new iMac to stay as cheap as possible (and the new model increased the entry level mac with 100 euro), so it's really about the low-end models.