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Date:      Thu, 07 Aug 1997 02:34:55 -0500
From:      Tony Overfield <tony@dell.com>
To:        Mark Mayo <mark@quickweb.com>
Cc:        Curt Sampson <cjs@portal.ca>, hackers@FreeBSD.ORG
Subject:   Re: Pentium II?
Message-ID:  <3.0.2.32.19970807023455.006c4904@bugs.us.dell.com>
In-Reply-To: <19970806223748.63083@vinyl.quickweb.com>
References:  <3.0.2.32.19970806043249.006df3e4@bugs.us.dell.com> <3.0.2.32.19970803041915.006a69e4@bugs.us.dell.com> <Pine.NEB.3.93.970803031523.7035A-100000@gnostic.cynic.net> <3.0.2.32.19970806043249.006df3e4@bugs.us.dell.com>

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At 10:37 PM 8/6/97 -0400, Mark Mayo wrote:
>Just one question: why are you comparing the PPro with 256K cache
>instead of the PPro 200/512 ?? Everybody I know that builds high
>end PC server (an oxymoron I know..) used the 512KB version of
>the PPro... And most run it at 233MHz...

Because my point was only to show that the L1 is faster than the 
L2 cache, even on the PPro.  The size of the L2 cache isn't 
important to that specific point.  I did describe the data which 
indicated the L2 cache size, but only because I wanted to explain 
the rest of the numbers for the sake of completeness.  

The PPro 200/512 has only two numbers different.  The 384KB 
and 512KB numbers are similar to the 256KB number instead of 
the 768KB number.

I don't have the time or will to properly compare the PPro to the 
PII for high end PC servers.  It's my *opinion* that the PII at 
266 or 300 MHz will always outperform the PPro, unless you need 
more than two processors, in which case the PPro is currently the 
only way to get that.

You might also look at: 

http://www.alde.com/speed.html 

to see how at least one CPU bound application performs on a wide 
variety of processors.

-
Tony





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