begin  quoting John H. Robinson, IV as of Tue, May 24, 2005 at 02:30:19PM -0700:
> Todd Walton wrote:
> > On 5/23/05, DJA <[EMAIL PROTECTED]> wrote:
> > 
> > > o It's not an x86.
> > 
> > As for "It's not an x86", well, can't argue with that.
> 
> Yes you can! Black box it. You can't tell the difference between x86 and
> PPC. It is a meaningless distinction.
 
If it were truly meaningless, then it wouldn't matter, and we wouldn't
have so many people dancing a jig whenever they hear a rumor that
<vendor> might move to x86.

(Remember, x86 is where 1/1 = 0.9999999999991992991398 !)

> Things like battery life and effective speed can be explained by lots of
> things other than merely CPU.  It only becomes important if you are
> doing systems level work. If you are doing that, then you are not using
> it as a general purpose desktop, but as a developmental platform.
> 
> I understand the general aversion to x86, but I will let you think about
> this: The CPU that gives the best bang for the buck is x86 based. PPC
> systems are muchmore expensive than a comparable x86 based system.
 
Where the bang is measured in MHz, perhaps. But that's (a) not a fair
measure of "bang", and (b) the x86 lagged for a long time in that area
and the x86-supporters figured it wasn't an important distinction, so
it's not fair (but entirely consistent) _now_ to suddenly consider that
important.

> Now, this may be because no one makes generic PPC based systems. Only
> really Apple makes them, and they control exactly what goes on the
> board. This may explain why PPC appears to be a better system. I doubt
> that there is much in the PPC that makes it inherently better than x86.

Aren't there at least two generic PPC based systems?

(Naturally, the web hates me... http://penguinppc.org/ppc64/machines.php
and http://penguinppc.org/otherhw/ list a few systems.

> It may have some features that are preferable, as the SPARC has features
> that are preferable.

Both PPC and x86 lack the no-exec-stack bit (AMD64 has it, but that's
not 'technically' a pure x86 chip, right?) that the SPARC has. :)

> Mass productio of x86 drives down the cost of them.

Mass production of PPC systems would drive down those costs. So don't
use cost as a sole discriminator.

> I'd like a non-x86 system that could run a Free operating system. An
> iBook or PowerBook would look really attractive, if it was actually
> supported under Linux (the AirPort issue Gregory mentions, and the
> firewire issues).
 
Well, Linus has a PPC box now. We'll see what changes.  

> All things considered, my replacement laptop will likely be x86 based.

As far as laptops go, there's x86, PPC, and SPARC, and that's about all
I can think of. Are there others?

-Stewart "Any ARM laptops in production?" Stremler

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