have downloaded both server and desktop isos. will try it out in next few days. For now I dont see much of any diff in usage but will be good to use the LTS server edition for further dev work as clients prefer ubuntu lts or centos
EDIT - Just read the power consumption comparison at Phoronix. Seems we are getting closer.
Link:
[Phoronix] Ubuntu 8.04 vs. Windows Vista Power Usage