The Hundred Gunner

I'm not sure about an iBook, but with my MacBook, i can take out the battery and it'll lock my multi at 6 (it won't go back up for load.) The lappy obviously must be plugged in.

However, this defeats the purpose as the battery will be taken out of the system. If there's a way to undervolt an Apple lappy, i'd like to know; the only thing that's slower when i'm UCed is Pi times and DVD/video encoding times.

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dragosmp

Hey Grim,

I would just like to add another piece of software that I am using for my current lappy (HP df6512) and that I used for my former Compaq 5009EA, it's called SpeedswichXP.

It has the same four presets as NHC:
“Max performance”
“Battery Optimized”
“Max Battery”
“Dynamic (load) switching”

Results on the Compaq:

- out of the box - 1.5hours (Sempron 3000CPU, ATI200M, 512MB Ram) with Win Home + McAffee

- Win XP Pro SP2 + Avast and SpeedswichXP "Max Battery" - 2.8-3 hours depending on load. The CPU was pegged at 800MHz from the stock 1.8GHz - quite enough for browsing and all.


Results on HP:

- out of the box - 1.5 hours (Turion X2 TK57, nV 7050m, 1GB Ram) with Vista home premium installed + Norton AV

- replaced OS with XP SP2 Pro + Avast AV and SpeedswichXP with "Max Battery" - 2.5 hours, even more is browsing on lan card and not on WiFi. The CPU cores are pegged also at 800MHz, I've never experienced any slowdowns.

The bottom line on this piece of software is that it roughly doubled the battery life of my lappy equipped with the non-mobile Sempron 3000+ and it increased the battery life by 80% to the HP equipped with a Turion64 X2.

I've played with an Acer with pentium M @2GHz. Somehow the results weren't as impressive as for the AMDs: battery life increased from 1.5h to around 2h, but the CPU was pegged at 1.4GHz, it couldn't get it any lower.

Couple this with some undervolting and it could get really interesting. Thanks Grim for the find, I'm always trying to get the most of the HW I'm buying and this certainly helps.

Cheers!

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Grim

yes yes!

I stumbled on that one too...
never tried it out though..

nice to see the results! - those are impressive ^_^

I think I may try THIS one with the lappie..

its not very strange that you got it working with a non-mobile sempron.

AS all those chips have AMD's C&Q tech (which is basically load scaling )

Very nice man.
(and thanks for the added info ^_^ )

Rab1t_K1ll3r^

amazing idea..... but does this mean for laptops there is going to be an "underclock.net"

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