Any option for upgradable notebooks?

[Guytronic]

I'm close to buying an ACER brand notebook.

Before jumping however I was wondering if anyone here had knowledge of notebooks that could be upgraded with better processors and dedicated mobile graphics cards after buying.
Far as I see currently it seems notebooks are somewhat a throw away if you want to move up without buying a whole new machine.

 

[eKeith]

Don't have any specifics on Acer or other brand current devices but I have purchased ThinkPads in part for this reason. However Lenovo's "s" or slim versions will be less upgradeable.