Re: i386 vs x86_64

From: Calvin Gordon <calvin.gordon_at_no.spam.please>
Date: Thu Dec 13 2007 - 09:21:53 CST

Do most modern Pentium processors count as a 32 bit or 64 bit ?
In particular I have purchased an Intel Pentium Dual Core E2180, LGA775
Pkg, 2 Ghz, 1MB L2 cache, 800 Mhz FSB.
This will end up as a file server for a small network, no more than 50
users. The only additional service it may provide in the future is some
remote connectivity logins, once i look into and learn how best to do
that on a Linux Box.

If i understand the first answers/responses, i think you are
recommending to use the x86_64 version.

Cal Gordon
Dylan Griffiths wrote:
> Calvin Gordon wrote:
>> I'd like to download the newest Fedora Core (8)
>> Could someone please post an explanation as to when and why I would
>> choose the i386 version as opposed to the x86_64 version. What types
>> of hardware are each intended for (if indeed hardware generation is
>> the deciding factor)
> x86_64 is faster. Why? More registers so you use the stack less
> during argument passing. I don't have any real #s to back this at the
> moment, so I'll give you another good reason.
> RAM. 4gb of RAM can be had for less than $200. i386 Linux will use
> at most 3.3-3.4gb, due to the overlap of the 32-bit address range and
> the mmaped io ranges for some devices. x86_64 Linux has no such
> restrictions. My desktop can use all 4gb of RAM (and this is the
> difference between using swap or not on my desktop; my working set
> fits into 4gb just nicely).
Received on Thu Dec 13 09:22:07 2007

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