Thread: What woud you realistically like to see in the N900?
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fanoush is offline fanoush
2007-12-04 , 15:05
Posts: 2,152 | Thanked: 1,490 times | Joined on Jan 2006 @ Czech Republic
#233
Originally Posted by TA-t3 View Post
Also, the OS reduces the voltage when it can too, which as far as I have understood is an equally important battery saving factor.
Yes, the whole point of CPU underclocking is lowering its voltage. Without lowering the voltage you just do same thing longer at slower clock which does not save much. It may (apart from having sluggish system) even make your battery life worse since system has to keep various hardware parts powered for longer time waiting for CPU to finish.

This idea is often called "race to idle" - the best approach is almost always to run at the fastest clock frequency afforded by the current voltage level and get the work done quickly.

See #11 here http://lwn.net/Articles/240253/
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