I have an Compaq/HP Presario X1018 notebook that currently has a 1.4GHz Pentium M (Banias) processor, and was looking to upgrade. The newest series of Pentium M CPU's are based on the 90nm Dothan core, these have a much larger cache as well as higher core speeds with the same 400MHz FSB. I'm trying to determine if the Dothan's are 'Drop-in' compatible with the older Banias, in particular I'm looking at the "Pentium M Dothan Model 745", for a Socket 478. Any help in determining if this new chip will work in my computer would be greatly appreciated.