Hello, been a while, dual CPU mobos

[Michael Laccetti]

I think my P4 3.0E (being E) is a Prescott chip.  Overclocked nicely, at
least.  Noticed a decent boost in speed switching from the 2.8C to a 3.0E,
if only because of the higher overclock.

My dual AMD MP motherboard just fried, and I was looking at getting a dual
Opteron replacement, but Tyan kindly replaced the thing for me, so it's
still stuck at MP land.  Maybe sometime next year I'll upgrade my 3.0 to
something better.  But much will change in a year... 


________________________________

	From: owner-tlug-lxSQFCZeNF4 at public.gmane.org [mailto:owner-tlug-lxSQFCZeNF4 at public.gmane.org] On Behalf Of
Lennart Sorensen
	Sent: Thursday, September 09, 2004 12:30 PM
	To: tlug-lxSQFCZeNF4 at public.gmane.org
	Subject: Re: [TLUG]: Hello, been a while, dual CPU mobos
	
	

	On Thu, Sep 09, 2004 at 12:01:58PM -0400, Michael Laccetti wrote:
	> P4s rely on their raw speed to keep them competitive, because of
their
	> extremely long pipeline.  The newer versions are at least 20
stages, perhaps
	> even longer.  AMD, and the P3s/Pentium Ms (not Pentium 4M) have a
short
	> pipeline.  Of course, they can't scale to be as speedy.  My
Pentium M 1.7
	> competes quite well with my Pentium 4 2.8 in terms of compilation
times, the
	> only thing that holds it back is the DDR 333 vs. the DDR 480 (yay
	> overclocking) in my workstation.  That, and the laptop HD is quite
a bit
	> slower than the workstation.
	
	Current "prescott" P4's have 31 stage.  Previous generation was 20
	stage.
	
	This may explain why same clock speed "prescott" chips have often
been
	slower than the "northwood" chips, although having larger cache in
	general helped out in other cases.  Very confusing and hard to
	generalize performance from I guess.
	
	Opteron/Athlon 64 currently runs 12 stage pipeline as far as I know.
	
	I know which one I want.
	
	Lennart Sorensen
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