Hi Jerry, at the moment 5 - 6 gigs is sufficient in a Mac machine if it's a tower I don't think you can get that much into an imac or mac mini or laptop. The softwrae doesn't use more than that so buying more is a waste of time at the moment - with the exception that there are some work arounds people have done where you can launch two lots of VI on the same machine - there are threads somewhere here on the forum which I haven't read haven't got to it yet - perhaps someone can post a link if they know off the top of their head... However once the apps/os and everything is 64bit capable the software will be able to use more than the current limit of approx 3 Gigs of RAM and will be able to access as much as the machine can physically hold - ie. 128gigs will not be a problem, neither will 10,000 Gb ram (not physically possible right now of course!).
For your purposes you need 1Gig for Logic, 3 Gigs for VI to have plenty of room to load samples (although I think it hits the ceiling at around 2.7 Gigs, people have had mixed results I think) and 1Gig for OSX Mac system - that is to leave plenty of room to move you don't want your machine to start doing a lot of hard drive swapping while running Logic. So 5 - 6 Gigs is a good amount, plus you can keep ichat, mail and safari open if you want to as well.
Miklos.
For your purposes you need 1Gig for Logic, 3 Gigs for VI to have plenty of room to load samples (although I think it hits the ceiling at around 2.7 Gigs, people have had mixed results I think) and 1Gig for OSX Mac system - that is to leave plenty of room to move you don't want your machine to start doing a lot of hard drive swapping while running Logic. So 5 - 6 Gigs is a good amount, plus you can keep ichat, mail and safari open if you want to as well.
Miklos.