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Subject: Re: centrino performance?

Author: Tom Kerrigan

Date: 09:48:21 06/20/03

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On June 19, 2003 at 17:32:00, Aaron Gordon wrote:

>On June 19, 2003 at 08:46:45, martin fierz wrote:
>
>>On June 19, 2003 at 05:10:25, Aaron Gordon wrote:
>>
>>>On June 19, 2003 at 03:55:49, martin fierz wrote:
>>>
>>>>i was just reading this computer magazine which says that the new pentium M
>>>>(also sold as "centrino" together with other components) is very fast compared
>>>>to older notebooks. does anybody have data on this (e.g. crafty benchmarks)?
>>>>
>>>>cheers
>>>>  martin
>>>
>>>From what I've seen so far a Centrino cpu is a Pentium 3 with 1mb of L2 cache.
>>>The extra L2 makes no difference for chess, though.
>>
>>if this is true, how come pichard's 1.3GHz centrino runs ruffian faster than my
>>2.4GHz P4?
>>
>>cheers
>>  martin
>
>Pentium 4's are much slower MHz for MHz than an Athlon or Pentium 3. This is why
>an old Celeron 1GHz (with a P3 style core) is the same speed as a Pentium 4
>1.5GHz. An old Athlon XP 1900+ 1.6GHz is about as fast as a Pentium 4 2.8GHz in
>Crafty... and my Athlon XP overclocked to 2507MHz is about the speed of a
>Pentium 4 @ 4GHz in Crafty if a P4 such as that existed.

No, 1.5ghz vs. 1ghz is significantly different from 2.4ghz vs. 1.3ghz. The
answer to Martin's question is that the Pentium M is quite different from the
Pentium 3.

I don't know about Crafty, but I don't think the performance difference between
the AXP and P4 is that big on average. I know that for my program, my AXP 2000+
runs slightly slower than the 2.2GHz Northwood I have at work.

-Tom



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