Yeah, good point.
Found this on GameSpot:
"Reason #4: System Requirements. UO does not demand a high end system to run. One could look at this reason as a weakness, because the game’s graphics/sound are limited. However, EA has made a decision to keep the system requirements low.
Kingdom Reborn (more on that later) will even have relatively low system requirements. If you are a person who is not interested in spending thousands of dollars to upgrade a perfectly good computer (i.e. one that does fine with “normal” functions, such as word processing, spreadsheets, etc.) just to play games, then UO might be for you."
Although this can be based on unofficial informations between developers and press, so still we don't know nothing precisely.
I'd rather hold on for a while with that laptop of yours