Underclocking/Undervolting of CPU and GPU for better battery life

hello,
even though i searched quite a lot, i didn;t find any guide on how to undervolt/underclock a CPU and GPU ...

i would like to underclock my asus, because i'm most of the time not using the performance it gives, because i don't need it most of the times... and I would appreciate better lifetime a lot more...

i have an ASUS g1s with a nvidia 8600m gt and a t7300 intel core 2 duo...

i would like to put both on the lowest clocks possible for internet browsing and listening music, so that i can get the best battery life....

thanks you guys very much for your help !

 

You can underclock it with rivatuner or the nvidia control panel, but it seems that undervolting is not really an option like with cpus.

 

yes you can undervolt processors, you just need to know how to use RMCLOCK by cpu rightmark. It is a great program which has successfully undervolted my T5300 and my Opty 185, while mantaining 100% stability.

Most of the time you do not need to undervolt. Just set your power settings on max battery, and the intel speed step will slow your processor so that it does not use as much power and runs cooler.

K-TRON

 

i want to undervolt and underclock the CPU and GPU, i'm mainly asking if someone could tell me how to do it in rivatuner and Notebook Hardware Control

 

NHC is simple, just lower the voltage slowly and test for stability.

Otherwise you can't undervolt the gpu.

 

I personally use the regular powermizer from nvidia, it works OK and uses 3 phases..168/100 being the lowest. Did you test if it's working?
Like adinu said, if you underclock the GPU you will pobably loose the nvidia native undervolting capability so you won't gain much battery life (or reduce heat).
For 7300, I tried RMClock but it cannot (yet) use the lowest power saver setting intel driver does...so 0,85v/800Mhz won't work in baterry mode. Only while plugged you will get a little advantage reducing heat.

 

Why get a G1S in the first place? Asus is not known for its laptop's battery life... A Dell Latitude D630 would've served you better.

 

http://forum.notebookreview.com/showthread.php?t=124420

 

i dont know why, but it doesn;t show me the values in NHC... does anyone have an idea why ?

 

Just use power saver settings through windows. It'll underclock your CPU/GPU for you.

 

Does it undervolt too?

 

I have a Dell D630 with ~4:30 hours of battery life with a Nvidia 135m (like a 8400GS) and I tried RMclock, but really didn't notice much of a change.

When purchasing this laptop, I realized that laptops are pretty much set in the amount of battery life they have. You can try setting it on max battery, with turning off bluetooth, but after that you will only be able to squeak out maybe 10 minutes with a few more tweaks.

Max battery will keep you in the lowest setting for the most of the time. However, what I would suggest is getting RMclock and setting your lowest to 6x and I think .850v. Then uncheck everything else. This will force your computer to only run at 600mhz.

 

AFAIK NHC does not fully support Santa Rosa (T7300) yet...you better try RMClock.

 

undervolting the cpu really doesn't help much in that most of the time, you're on the lowest multiplier and voltage setting anyway, so it's not much change. however, it will markedly reduce your temperatures.

 

copied from a response of me in another thread...

thanks man for your response... it is better to try your values right away, then to do testing for many many days, because it realy is not recommended to simply lower them, you are suposed to go one value lower, do a stress test for 40 minutes and then lower again, which would actually take a bunch of time...

what i actually want is to simply get more of it, i don;t need the gaming performance when i am on battery, i want performance which is enough for watching a video or surfing the web, if i could find values, which would make my laptop laggy for this activities and would increase battery life as well, i'll be very happy,,

so you guys think that it is ok to simply uncheck all the higher multipliers and to just lower the 6x multiplier to 0.935 ? that would meen that the laptop would just run on this multiplier and on the defined voltage... is it safe to do it like this ?

i know it wasn't the best buy when i wanna use this laptop also for school, but i kinda realized that the battery life isn't sufficient so i bought a secondary battery, if i kinda could set the voltage to such a level, which would allow me to use the laptop for 3 hours and 20 minutes, i would get almost 7 hours with two batteries and that is pretty good i think... (i'm propably a bit of an utopist) but i really love the design of this laptop...
the only thing i would enjoy is if i would find a way
ASUS G1S
how to change the way the green lights on the sides flash... to make them light constant, without blinking...?

 

i would set your performance on performance on demand. this way, it should stay on the lowest multiplier in general unless you really need the extra power. make sure you set up your profiles properly.