OS X Server is the server-version of OS X Client software. It features special administrative tools to make it easier to adminster users, privileges, sharing, web servers, etc. It sells for $999 (unlimited users, or $499 for 10 users) vs. $129 for Client. OS X Server can run on most Macs, including the G5, and you can read about it here: http://www.apple.com/server/macosx/ (the client software details are here: http://www.apple.com/macosx/). The PowerMac G5 in the grey "cheese grater" case is considered a desktop (typical user) machine, but it would certainly make a reasonable server if you were to install OS X Server software on it. However, you'd be paying for features (lots of expansion slots, large box, powerful video card) that you don't really need in a server machine. http://www.apple.com/powermac/ Apple's "real" servers are the Xserves, which have special features for servers (some redundant parts, etc.), and are designed to fit in a rack of equipment instead of on the desktop. http://www.apple.com/xserve/ You could, probably (?) install OS X Client on an Xserve, but it wouldn't make a lot of sense to do so -- it's not necessarily a great desktop machine, given the noise level and lack of slots for expansion cards, etc. Hope that helps a bit, and I've probably glossed some things over in an attempt to provide a high-level overview. -rob. -----Original Message----- From: Mac OS X Newbies [mailto:X-Newbies at lists.themacintoshguy.com] On Behalf Of Kevin Matthews Sent: Thursday, January 15, 2004 10:42 AM To: Mac OS X Newbies Subject: [X Newbies] What is considered to be a Server these days? Hello, In the Mac lingo is the G5 dual considered a 'Server' or is there actually different OSX software for servers and 'regular' Macs as it concerns OS X 10.3 or 10.3.2??