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Celeron vs Celeron-M

Can anyone explain or point me to a site which compares performance of the Celeron with the Celeron-M.  Intel don't seem to want to release any comparative figures.

I know that the Centrino technology gives more power per clock cycle, but don't know if any of this applies to the -M.

The reason I ask is that I have had a batch of faulty laptops which were Celeron 2.6GHz and the manufacturer has agreed to swap them for a similar spec machine but which has a Celeron-M 1.3GHz processor (but not Centrino).

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Here's an article that should clear up all your questions: http://www4.tomshardware.com/mobile/20040309/index.html

Basically, the Celeron-M is the Pentium-M with less cache, and no SpeedStep capability.
NickGraysonAuthor Commented:
I'm sorry, but that doesn't help me (maybe I'm being thick, and I'm sure someone will tell me).  That doesn't actually give me relative performance comparisons.
A Celeron-M is a little less powerful than a Pentium-M, and a Pentium-M 1.3 is about equivalent to a P4 2.4: http://www.cpuid.com/PentiumM/index.php

Since a P4 is always faster than the same clocked Northwood Celeron (http://www.tomshardware.com/cpu/20020903/index.html), that would mean a Celeron-M is significantly faster than the same clocked Northwood Celeron.
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