Originally Posted by B Nietsnie
generally, if you need power go 64 if you need portability go PM
That's completely true, but not actually what he asked. If you want power, you get an A64, if you want battery life/portability, get a P-M. The only reason you would EVER buy a P4 (in a laptop) however would be if you had an extra couple of grand lying around and wanted a nifty-looking doorstop or something extra-insulting to hit your brothers...