FreeBSD 4.x Opteron Question

[Boris Spirialitious]

--- Matthew Seaman <m.seaman at infracaninophile.co.uk>
wrote:
> On Tue, Mar 15, 2005 at 08:50:22AM -0800, Boris
> Spirialitious wrote:
> > When opteron support start for Freebsd? I have
> 4.9. 
> > is supported? Or 4.11 better? I can't use 5.x.
> 
> Well, AMD64 support as a tier-1 platform only came
> in with 5.x, so
> you're S.O.L. if you have to use a 4.x release
> version.  
>  
> > Will a i386 disk boot on opteron system? Can I
> > use same disk image for intel and amd MBs? Any
> > big problems?
> 
> You can generally run AMD64 machines in IA32 mode --
> but what would be
> the point? All you get then is a machine that costs
> more than an
> equivalent IA32 box and that probably performs
> worse.

That is very curious to say. Isn't the advantage
of Opteron the superior IO architecture? There is
not much advantage with 64 bit computing. What is
faster about it? Pointers are bigger, so it use
more cache for less. NOt much 64bit math in
OS. Why do you say it will perform worse?

Boris


		
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