PocketPCTechs does RAM upgrades, but will void your warranty.
EDIT: I just checked the site and the upgrade is not available for X30.

So I guess the answer is no. Are you clearing out temp files? Do you use the Switcher Bar or 3rd party utility to close programs? Are you installing most apps into BIS or memory card? These steps will help you save RAM. Also do a soft reset before you start playing the game.