The Everymac website mentions that the PowerMac G4 1.25DP (MDD) or the single CPU version works with OS9 in the classic environment, but it makes no mention of booting directly into OS9. Are both of these systems able to boot directly into OS9?
There is two kinds of MDDs Firewire 400 that can boot natively on Mac Os 9 and Firewire 800 that won't boot natively on Mac Os 9 −at least on the easy way
Does Mac OS9 even take advantage of multiple processors? Maybe OS9 itself can, but I wonder how many programs utilize it. I'll probably get the DP version anyway.
There is a lot of confussion about this topic. Once for all: In Mac Os 9 only the apps, not the Operating System use dual processors. Mac Os 9 only tell the apps that a second CPU is avaliable -if they ask for it- but NOTHING MORE.
There is little software that can use a second CPU, depending on your use of such software may worth or not.
Photoshop, Apple MPEG2 encoder, SoundJam, Cubase are some examples of software that I know (but there are more...) that uses a second CPU, their enhacement may vary from 25% to 100%.
Also, is the Ram limitation 1GB, or 1.5GB? I know this applies to Logic 5.x, but not sure about Logic 6. I've read both.
Mac Os 9 can use a max of 1.5GB of RAM. I use Cubase with 1.4GB of RAM for itself, without any problem. Your mileage may vary as some are telling that some apps (Logic Audio) may have problems with more than 1GB of RAM...