Question : Problem: 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).

Answer : Problem: Celeron vs Celeron-M

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.