Probably Moblin Linux:
You could apply their patches to another Linux distribution (e.g. Gentoo Linux) to get a similar effect.
Which kernel/distro/desktop combo has the best battery life for small netbooks?
- Is the latest kernel always the greatest?
- Is Debian still the leader of the pack?
- Is LXDE really more gentle than KDE 4.3 in the Aggressive Powersave or Xtreme Powersave modes?
Tough questions that only Phoronix could handle!
"A Detailed Look At The ATI Linux Power Management"