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Date: Fri, 18 Mar 2005 19:28:25 +0000
From: Chuck Robey <chuckr@chuckr.org>
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To: Kenneth Culver <culverk@sweetdreamsracing.biz>
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cc: Boris Spirialitious <hardcodeharry@yahoo.com>
cc: freebsd-questions@freebsd.org
Subject: Re: FreeBSD 4.x Opteron Question
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Kenneth Culver wrote:
> Quoting Chuck Robey <chuckr@chuckr.org>:
> 
>> Boris Spirialitious wrote:
>>
>>> --- Boris Spirialitious <hardcodeharry@yahoo.com>
>>> wrote:
>>>
>>>> --- Matthew Seaman <m.seaman@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.
> 
> 
> Actually due to the onboard memory controller it performs significantly 
> better
> than like-priced chips from intel.

I completely agree with you, Ken, but I had the feeling that this fellow 
was flamebaiting me, and I didn't want to subject everyone to that.  I 
was right to begin with: there is some gain from having the chip, there 
is more gain if you have the better instruction set.  If folks need to 
know more, like I *know* you have, you read one of the many 
architectural sites on the web.


> 
> Ken
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