Mac Pro handles up to 16GB of RAM and 3TB of disk space.
Kind of academic, since OS X itself is not fully 64-bit.
http://arstechnica.com/reviews/os/macosx-10.4.ars/4
So if I were you I’d qualify your recommendation before you get a horde of angry people beating a path to your door… Make it clear that you need to have a suitable chipset [to use 4 GB+ of physical memory]
Ian, good point, will do.
Exactly where is that magical PAE memory supposed to appear?
It’ll only “appear” in apps that explicitly code to support the AWE (address windowing extensions) API, which makes use of the PAE extensions in the CPU. I don’t think the base OS does this, but applications might.
When I go into the bios, it tells me that there is 4GB installed but only 3.38 Avail for use [and I am running a 64-bit OS]
As Ian pointed out, this is due to the BIOS; check your BIOS for an option that remaps IO memory above 4GB.