Core Solo vs Celeron M 4xx series

[evilr00t]

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I haven't been able to ascertain the difference between the Core Solo and the Celeron M 4xx series, other than the extra 1M of cache of a Core Solo. Does the *YONAH* Celeron M lack power saving features that the Core Solo has, and how much performance is gained by having the extra 1M of cache?

 

[theboomboomcars]

The celeron M has no power saving features. Whereas the core solo does. A core solo would be similar to a pentium M in performance, maybe a bit better.

 

[evilr00t]

Would it be better to get the Celeron M system and upgrade to a C2D Merom, or the Core Solo system then upgrade to a C2D Merom?

 

[theboomboomcars]

You would need to verify if you could upgrade. A lot of notebooks have hacked a bios that wont boot with a different type of processor.
If the socket is the same, celerons come in both 478 and 479 varieties, and the chipset supports a C2D, then it wouldn't matter.
I would check out the Core Duo laptops as they seem to be on nominally more expensive than celerons and Core Solos. Then you'll have a dual core until you can get your C2D.