underclocked HP Touchpad under Android battery life improve?

[buzz86us]

I was looking at getting the HP Touchpad to read CBZ/CBR files (basically a archive filled with images). I realize that definitely wouldn't really stress the processor much if at all so I was thinking for a low power task like that I could underclock the processor down to about a third its original power and that would increase the battery life dramatically without much sacrifice in the line of performance.
Any input on my theory would be nice.

 

[DemonHighwayman]

I'm sure it would help a bit but the screen draws the most power from the battery by a long shot.

It would be handy to see a comparison of battery life with different clock speeds, maybe with a video running on a loop. I may do this myself just out of curiosity soon.

 

[Xsever]

Before I put the TP on standby at night, I change the CPU governor to POWERSAVE which keeps the CPU locked in the mimimum frequency.

This allowed me to save a lot of battery. With ondemantcl, battery drained 10% overnight. With POWERSAVE, it drained 4$ only.