"Undervolting" Technique for Cooler Laptops!

DarkDavil · Nov 23, 2009

Many options are available for laptop cooling, and as i have an HP, i don't know why, they tend to be "hot" laptops, all 5 of my HP laptops have been very warm. Recently, i've found a GREAT solution to this problem!! My Specs are all filled out, and you may ask me any questions here if needed

First, look at this picture i took a couple of minutes ago

I have a 100% CPU Load, using very few ram, and my laptop fan i NOT on, and I'm at 41-43 Degrees Celsius... thats great, where usually my fan would be going nuts. As i am much tooooo lazy to write a tutorial to do this, please check out this link, its on a "under-volting" guide i followed closely, and now my laptop is great. Please remember to STRESS TEST!!!! or you will BSOD a lot...

Good luck to all those with laptops!
The "Undervolting" Guide

Please reed that posters entire post, and carefully

Applies to all types of Graphics Cards, and Intel/AMD CPU's, HDD and SSD's .

Qdos · Nov 23, 2009

I wonder if that'd work on my Atom N270 netbook... :huh:

DarkDavil · Nov 23, 2009

Interesting.... though you could try it out

But, all you'll get is BSOD's if it won't work

So back up data ^^ I got like 3 BSOD's when i put my voltage's too low

But now I'm all perfect

, and currently running a stress test that I'll continue to run all night

Etihtsarom · Nov 25, 2009

If you undervolt an Atom, what will you be able to use it for? Atoms run @ ~1.6G right? Undervolting it will probably force you to take it down to 1.2-1.4, probably gonna be too slow.

mats · Nov 25, 2009

Well, thats the nice thing of undervolting.

You do not reduce clockspeed or other performace factors.

To Ensure stability the system will always give the cpu a little higher voltage than it needs. Thsi level is defined and fixed from INTEL/AMD. However depending on the chip you got in your box it probably needs a little less. In other words there is a margin between requierd voltage and given voltage. With undervolting you reduce this margin and therefore you save some power

marsx1984 · Nov 26, 2009

I want to try this but RMclock says "Unknown Model" for my cpu . I have an AMD Athlon X2 QL-62. Under Profiles I only have "No management" . Any sugestions ?

Subsonic · Nov 26, 2009

Thanks DarkDevil! I just reduced my laptop operating temperature by 15 degrees C.

+1 Rep

Qdos · Nov 26, 2009

Ragzarok said:
If you undervolt an Atom, what will you be able to use it for? Atoms run @ ~1.6G right? Undervolting it will probably force you to take it down to 1.2-1.4, probably gonna be too slow.

I was actually joking, since the CPU is only rated at 2.5 watts...

Etihtsarom · Nov 28, 2009

There ya go. WhatYouSayIsn'tWhatIGet.

DarkDavil · Nov 28, 2009

Qdos said:
Ragzarok said:

If you undervolt an Atom, what will you be able to use it for? Atoms run @ ~1.6G right? Undervolting it will probably force you to take it down to 1.2-1.4, probably gonna be too slow.

Click to expand...

I was actually joking, since the CPU is only rated at 2.5 watts...

Nop. Undervolting has NO decrease on performance/clock speeds. Undervolting isn't UnderCLOCKING. Undervolting simply sends the appropriate amount of power to your INTEL/AMD chip. Because, straight out of the factory, your chips are being sent the default amount of power, which usually means too much. Undervolting only makes the power at the level your Intel/Amd chip should be receiving it. GL all

Qdos · Nov 28, 2009

DarkDavil said:
Qdos said:

Ragzarok said:

If you undervolt an Atom, what will you be able to use it for? Atoms run @ ~1.6G right? Undervolting it will probably force you to take it down to 1.2-1.4, probably gonna be too slow.

Click to expand...

I was actually joking, since the CPU is only rated at 2.5 watts...

Click to expand...

Nop. Undervolting has NO decrease on performance/clock speeds. Undervolting isn't UnderCLOCKING. Undervolting simply sends the appropriate amount of power to your INTEL/AMD chip. Because, straight out of the factory, your chips are being sent the default amount of power, which usually means too much. Undervolting only makes the power at the level your Intel/Amd chip should be receiving it. GL all

My netbook runs soooo sweetly already I'd be loathed to fiddle further with it when it already has a number of tweaks applied to save battery life and underclock the atom if operating for extended periods without external power...

DarkDavil · Nov 29, 2009

Qdos said:
DarkDavil said:

Qdos said:

I was actually joking, since the CPU is only rated at 2.5 watts...

Click to expand...

Nop. Undervolting has NO decrease on performance/clock speeds. Undervolting isn't UnderCLOCKING. Undervolting simply sends the appropriate amount of power to your INTEL/AMD chip. Because, straight out of the factory, your chips are being sent the default amount of power, which usually means too much. Undervolting only makes the power at the level your Intel/Amd chip should be receiving it. GL all

Click to expand...

My netbook runs soooo sweetly already I'd be loathed to fiddle further with it when it already has a number of tweaks applied to save battery life and underclock the atom if operating for extended periods without external power...

Yea, but undervolting DOES add 15-20 more minutes to your life

But, honestly, its your choice, i enjoy my laptop running cooler and having more battery, if your happy with your current rig/build, then im happy for you too

!

harpua · Nov 29, 2009

The only problem with RM Clock, which btw, I have been using for several years on my laptop to help keep it running cooler, is that the developers apparently have stopped working on it because there has been no new version in over a year and it is not compatible with many newer CPUs.

Also, there now is a 64 bit driver available for RM Clock somewhere (not from the developer of RM Clock) for it. Forget where I got it but I'm sure one can find it on Google.

There is another program that does the same thing as RM Clock but unfortunately, unlike RM Clock, is not free, called CPU Genie. But there is a free trial and CPU Genie has an automatic testing utility that will find the optimum voltage for each "step" of your CPU, so one can use the free trial of CPU Genie to do the hard work of figuring out the proper voltages to set your CPU at with RM Clock. Or, one can just stay with CPU Genie if you want an app that is still being updated and supports the latest CPU's.

Subsonic · Nov 30, 2009

Tried to use CPU genie but doesn't seem to work with AMD chips.

Qdos · Nov 30, 2009

DarkDavil said:
Yea, but undervolting DOES add 15-20 more minutes to your life But, honestly, its your choice, i enjoy my laptop running cooler and having more battery, if your happy with your current rig/build, then im happy for you too !

The heat issues in mine are due to a 320Gb 7200rpm WD HDD swap performed, which makes it run up to around fifty degrees to sixty degrees internally - and the nature of these tiny machines means airflow is poor.

It's under warranty so I don't much care, but another time I would certainly look more carefully at models with all aluminium cases that help dissipate heat.

The Nokia 3G netbook looks kinda kewl... but I haven't seen one in the flesh yet... and I'm sure there will be a plethora of new models next year, running W7 as opposed to good old XP...

Zidane24 · Dec 15, 2009

That CPUgenie works quite well...

I have my processor now running at the rock bottom voltage for me (0.925V) up until the 10.0 multiplier (2000MHZ for me) with the max voltage ending up at 1.025

Kari · Mar 13, 2010

DarkDavil, could you please post anything here so I could rep you, to thank you for my cooler laptop.

The thread is too old to rep, need a new post.

Kari

"Undervolting" Technique for Cooler Laptops!

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