a question about energy

[Zhi Li]

All,

I'm working in a project which study energy saving on PCs. I saw a
strange thing which was opposite to my intuition: when PC working on
graphic mode, it would be more energy saving.

When in graphic mode, on my PC, it is 52w; when I switched to terminal
mode(on linux alt-ctrl-1), it is 55w.

I also tried to init 3, then startx, the result is same.

Does anyone here know why?

Thanks
Zhi