Re: [OxLUG] 32bit or 64bit ubuntu for Mum?

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Author: Jamie Lokier
Date:  
To: oxlug
Subject: Re: [OxLUG] 32bit or 64bit ubuntu for Mum?
Dave Ewart wrote:
> On Friday, 13.11.2009 at 04:44 +0000, Jamie Lokier wrote:
>
> > [...]
> >
> > The 64-bit kernel will run faster, especially if you have >= about 1GB
> > RAM and/or are encrypting disks, and let you run specific individual
> > 64-bit userland things if you need to. Though, I guess your Mum isn't
> > likely to do the latter. :-)
> >
> > I've read that 64-bit userland takes more RAM than 32-bit userland,
> > but often runs a bit faster despite that because of the better
> > instruction set.
> >
> > [...]
>
> You are essentially saying that "a 64-bit OS runs faster than a 32-bit
> OS". I've _never_ seen this to be the case and that factor is thus
> never a consideration when deciding between 32-bit and 64-bit for me;
> the only considerations are, generally, (i) support of proprietary
> software/plugins - if important, this favours 32-bit on the whole, and
> (ii) support for Lots Of RAM - if important, this favours 64-bit.
>
> I don't believe what you say is generally true. Can you provide any
> references to back up what you say?


This generally favours 64-bit:

http://www.tuxradar.com/content/ubuntu-904-32-bit-vs-64-bit-benchmarks

This is more mixed:

http://www.phoronix.com/scan.php?page=article&item=ubuntu_osx_64bit&num=1

-- Jamie