32 Ubuntu on 64 bit AMD CPU, how ?

[Felipe Alfaro Solana]

On 10/8/06, Scott <geekboy at angrykeyboarder.com> wrote:
> <posted & mailed>
>
> On Friday 06 October 2006 10:01 am, Vincent Trouilliez
> (vincent.trouilliez at modulonet.fr) spake thusly:
>
> > Thanks all for the replies,
> >
> > Looks like there is no particular intervention required from me
> > whatsoever then, great, I like simple things ! ;-)
>
> As a side note, most off the shelf PCs sold in computer stores with
> 64-Bit prossers have 32-bit Windows XP installed.
>
> Some say 32-bit apps actually run better on 64-bit CPUs (or at least no
> worse than on 32-bit).

32bit apps should run at about the same speed on a 64bit CPU, since
they usually don't take advantage of the extra built-in registers and
additional CPU instructions. In my own experience, the same
application compiled for 64bits usually performs marginally better (I
mean, don't expect a twofold increase in performance).