On Monday 13 March 2006 14:10, "Hemmann, Volker Armin" <[EMAIL PROTECTED]> wrote about 'Re: [gentoo-user] Mobo/proc combination': > > My recommendations are: > > <1G RAM : 32-bit kernel and userland > > <4G RAM : 64-bit kernel and 32-bit userland > > else : 64-bit kernel and 64-bit (multilib) userland > > with amd64 on s939 you are buyiong ram in pairs, to use dual channel > mode. So you'll have 1GB, 2GB, 4GB.
Is 256M PC2700 not available, for those with very little money... > And with 1GB you are loosing ~160mb when using 32bit. With a stock kernel. You can actually tweak this fairly easily, and I've seen reports of being able to use 980M in user space. That said, if you've got > 768M of RAM and don't feel like tweaking your kernel, go 64-bit. > Plus, you can't > use the additional registers of the cpu in 32bit mode - so why using it > at all? Better memory architecture and microcode, larger caches, etc.; you might even get a Hz bump; in the near future, you'll get hw virtualization. There are lot of reasons to choose a modern processor than just the 64-bit mode. That said, there's very little reason to have less than 1G of RAM these days, and at that point you are well-served to put (at least) your kernel in 64-bit mode. -- "If there's one thing we've established over the years, it's that the vast majority of our users don't have the slightest clue what's best for them in terms of package stability." -- Gentoo Developer Ciaran McCreesh -- gentoo-user@gentoo.org mailing list
