[arch-general] ?rch x86_64 and i686 performance comparison
a.radke at arcor.de
Wed Nov 11 11:53:14 EST 2009
Am Wed, 11 Nov 2009 17:44:53 +0100
schrieb Dieter Plaetinck <dieter at plaetinck.be>:
> On Wed, 11 Nov 2009 17:18:12 +0100
> Sven-Hendrik Haase <sh at lutzhaase.com> wrote:
> > You will probably see the
> > opposite of what you saw in the VMs. Especially for video encoding,
> > x86_64 will be noticeably faster.
> why is that?
should be because of SSE+SSE2 extensions that are included in our
default compiler flags that are not used in i686.
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