heh. your mobo will draw more power with more RAM added. however, it would be so small you wouldn't notice. however, canandaRAM point is still valid, it could save battery life. however, it would hard to give a certain answer to the question because the answer would have statiscally proven towards average computer use. there are situation, i can think of where it wouldn't matter if you had more RAM because you didn't use the swap file, thus making your hard drive work more. there are also situation were there reverse is true. in other words, it would depend on the application and/or user. either way, you won't notice the difference in the big picture so don't worry about it.