The X40 takes standard 200 pin notebook memory
the original config is soldered on the board so you should always go with the 512MB version gives you more room to upgrade.
It does however use the smaller 1.8 HD but this is a better...
Originally Posted by sk33
Pentium M Low Voltage 1.3Ghz
768 MB Ram
8 Cell Battery (~5-6 hrs battery life according to reviews , 7.5 according to IBM,...