On Fri, 20 Mar 2009 23:35:41 +0000
Roger Leigh <rle...@codelibre.net> wrote:
> On Fri, Mar 20, 2009 at 03:50:50PM -0700, prad wrote:
> > i've recently returned to debian on a amd64 3400+ machine with 1G
> > ram in it.
> >
> > i am running the 32bit version of lenny.
> >
> > would there be benefits to use 64bit lenny instead?
>
> Yes.
>
> > in the archives, i found posts suggesting there is no benefit unless
> > you are using 64-bit apps that require extra processing power like
> > number-crunching.
>
> Unlike most other 64-bit arches, amd64 can provide better performance
> than i386 due to having more registers (since i386 has barely any).
> Other architectures already had plenty of registers, so they sometimes
> got slightly slower due to the increased memory usage (due to having
> 64 bit pointers in place of 32 bit pointers). Obviously things vary
> depending on what you are doing.
>
> There are other obvious benefits such as being able to physically
> address more than 4 GiB of memory.
>
> Google can tell you about this in much more detail.
>
>
> Regards,
> Roger
>
Interesting... If one has 32-bit installed, is there some sort of
upgrade / overwrite to the 64-bit version?
--
Best regards,
Chris
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