On 8/28/06, Christian Nygaard <christiannygaard at gmail.com> wrote: > I'm planning for new Centos 4 computers using the 64bit distribution and is > wondering > if there is a difference on how much RAM memory you should use on a 32bit > versus > 64bit operating system? > > Will processes such as for example KDE, Firefox use more memory on the 64bit > architecture > than on the 32bit and if so by how much as a rule of thumb? > I don't think so, at least as I understand things 64 bit just means you can use more memory not that you must. I don't know enough about it but it seems to me you will gain some size from the fact that pointers/addresses are now 8 bytes instead of 4, but I would think that would not be that big of a deal. Cheers...james