Puny. I heard that Windows Server 2003 can handle up to 512GB of RAM...
Like who would ever have that much?
Oh, and I'd like to disagree about Macs being good for gaming. It takes ages and ages, usually, for brand new games titles to get ported to the Mac, if at all.
But if it was good for gaming, I still wouldn't get one - PCs have better upgrade potential, and are cheaper all round. If Linux was a good gaming platform, I'd rather have that instead of Windows, and keep my normal PC, instead of switching to a Mac.
Don't get me wrong, I quite like Macs (might be getting an old iMac for £50), but they don't suit all of my needs.