[CentOS] Silly question x64 vs i386
John R Pierce
pierce at hogranch.com
Wed Dec 16 19:59:16 UTC 2009
Scot P. Floess wrote:
> I have a really silly question... but just want to ask...
>
> I have one box on my home network that is x86_64 capable... My other
> boxes are all i386. As this x86_64 machine can, at most, house 4 GB of
> RAM (currently only has 1 GB) - is there any advantage to my running
> x86_64 on that machine instead of i386... Long story as to why I am
> asking - but before I go off and moveit down to i386 - just wanted some
> opinions :)
>
on most 64bit capable x86 CPUs, 64bit code is faster, because the x86_64
mode has more registers than the traditional i386. On the first gen
Intel x86_64 CPUs, that would be P4's that had 64bit added to them, I'd
probably stick with 32bit, but on any AMD or Intel Core CPU, I'd
probably use x86_64 by default.
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