I previously had Windows XP Tablet Ed. on my HP TC4400. Now I have Windows 7 installed on it and I've noticed quite a substantial increase in battery life, in particular when using the power saver profile.
Does anybody have any suggestions on how best to approximate the power management features present in Windows 7 that are not present in Windows XP? For example Windows 7 allows one to set a ceiling for processor speed - this is not option is not available in Windows XP (at least not from the power management dialog box); Windows 7 offers similar power saving t. What free, hopefully easy to use, 3rd party software offer good ways of extending XP's power management capabilities?