So has anybody actually measured the real power useage of the pc and monitor?
Years ago, I did. This is what I found...
Computer was about 60W when it was full on. About the same as an incandescent light bulb. My impression is that remained constant through several computers (about the same as a light bulb). I suspect what was gained in energy efficiency was given up in speed increases. Our electric bill dropped by about two light bulbs when we switched to laptops.
The harddrive seemed to be the biggest sponge.
The monitor (I think it was 19") was about 30W full on. A blank screen (all black) consumed very little power and used just a tiny bit more power than "power saving mode".
Does your motherboard doesnt have Wake up on Lan?
Is the Magic Packet routed through the internet?