I take it from your last post that you now have your hands on the machine :-)

A 64 bit OS lets you use more than 4 GB of RAM, so you can run more 32 bit things at once, or you can run a giant 64 bit application. Or any combination. Isn't Vue Infinite a 64 bit application? (I don't know because I haven't got it yet, the Personal Learning Edition is seeping in from the torrents as I type.) If so it could use 64 GB of RAM if you have it.

I am lusting for a 30" monitor that is on sale here in Canada, I think it uses the same display panel as the Apple Cinema 30". It's 4" bigger than my TV!

Sorry my avatar is in the same pose as yours, it's from another site and it's supposed to be, er, my cat Dolly. (It's really just the DAZ Millennium cat.)