The "Undervolting" Guide

Thanks for the reply mate...I guess the lowering of voltage in my laptop also applies to my brain

Thanks for pointing out the info from the guide...I'm gonna risk it with the automatic adjustment of lower FID's as there are only two I could manually choose from anyway and if all else fails with just adjust them all to the one below the current stable voltage.

Cheers

 

You can most likely set them all to the lowest. I have my 12x set to 0.9875v while 11x all the way to 6x are set on 0.9250v (lowest). Since I stress tested my 11x at this voltage and it was stable, then obviously the lower multipliers would have no problem being set to this lowest voltage as well being that they'd only use less voltage.

 

Okay, I was able to get all of my undervolting setup done last night (RMClock, HWmonitor, Orthos, and the HWmonitor tray app and gadget for me because I like it).

Initial stable results are as follows for my Dell Vostro 1720 with P8600 CPU:

• 6X-9X multi - all test stable (20 min orthos runs) at 0.950v
• 12C decrease in temps at 9X/0.950v under Orthos
• 14C decreast in temps at 6X/0.950v under Orthos

• 8X and 9X tested stable at 0.9375v, but did not get a chance to test 6X/7X due to playing about with lower voltages.

• 8X/9X failed testing at 0.900v resulting in locked system (frozen, no BSOD)

Tonight I'll be doing 20min runs on 6X and 7X at 0.9375v, then letting it run until bedtime at 0.9375v/9X. Assuming that works out okay, I'll run the same for 6X tomorrow. If either fails, I'll rusume long-duration testing at 0.950v at 6X/9X over the weekend. I'll give final results once testing is completed.

Overall I'm pleased thus far with the temp decreases. Frankly, the P8600 runs fairly cool (well, at least compared to my T6400 in the M1330, though it runs decently cool undervolted compared to the horrible stock voltage temps!) to begin with. With no cooling pad it was maxing out at 52C at 0.950v/9X and 41C at 6X. I am sure temps will be slightly higher in the 3-5 hour runs, however.

Have not tried SLFM yet, but planning on activating it once the testing is done to see how it works. Will not be using IDA.

 

Has anyone undervolted there IDA? I'm curious if, when using it, a notebook's temperatures decrease at all. I've always unticked it because flipfire said "its buggy and the gains are negligible" but curiosity has gotten the better of me and i might enable and undervolt it in a little while's time, just to see if i notice a difference

 

Have read elsewhere on the internet that using 'Performance on demand' can cause more stress on the CPU and laptop in general due to the sudden spikes of voltage when extra performance is required...does anyone have an opinion as to whether there is any truth to this

 

any programs that offer half multipliers yet?! please say yes

 

Had you done a search of/read this thread, you would have discovered that both CPUGenie and Crystal CPUID support half multipliers.

Good luck

 

Wow. An "invitation" to comment on my favorite topic. I'll take it. Here goes (again). The whole purpose of undervolting is to have your CPU consume less power while its working. Done correctly, less power usage results in less heat and more battery life. Great. Sure, early on, I had fun running up and down my six speed "transmission" but eventually It dawned on me that I just wanted my laptop to run as fast as it was built to go without overheating. Thanks to this thread, I got there. The revelation that clinched it was this: The power usage of a CPU depends only on the load. At zero load, a CPU consumes the same negligible amount of power whether it's at 1 GHz, 2 GHz or 3 GHz. Why? Because there's no current flow at idle. OK. But what about under load ? Well, at 100% load your CPU will consume twice the power at 2 GHz than at 1 GHz. Yeah, but your computing job is done in HALF THE TIME! On this side of the Pond, we call that a "push" or "wash".

I can't resist: "Well, there you go"

 

yes, i know this, but aren't they not free and not as good as rmclock (at least one isnt, right?)?

 

These are my experiences; perhaps serve to give update to this wonderful guide “ http://forum.notebookreview.com/showthread.php?t=235824”
I have this processor "Turion (tm) X2 Dual-Core Mobile RM-72" (hp dv7 1110eg) with Vista Ultimate. 64bit

RM-72 is not recognized by the RMClock... I tried the PumaStateCtrl http://sourceforge.net/projects/pumastatectrl/ like recommended in the guide
But when I reset the PC, was blocked trying to load the system (Vista)...

Just last May 20 that person "Mr.Systematic" (I do not know the name) has released this tool http://amd.goexchange.de/ is an update to PumaStateCtrl , works for Vista 32 and 64 bit, even for the Seven.

Supports these processors Turion(tm) X2 Ultra Dual-Core Mobile ZM-80, Turion(tm) X2 Ultra Dual-Core Mobile ZM-82, Turion(tm) X2 Ultra Dual-Core Mobile ZM-84, Turion(tm) X2 Ultra Dual-Core Mobile ZM-86, Turion(tm) X2 Dual-Core Mobile RM-70, Turion(tm) X2 Dual-Core Mobile RM-72, Turion(tm) X2 Dual-Core Mobile RM-74, Athlon(tm) X2 Dual-Core Mobile QL-60, Athlon(tm) X2 Dual-Core Mobile QL-62, Athlon(tm) X2 Dual-Core Mobile QL-64, Sempron SI-40, Sempron SI-42
I works perfectly
More than a week without problems

Please if someone tested and works well, do a small donation to " Mr.Systematic " to motivate them to continue their work, thinking of those who have AMD

Greetings
Lec

Excuse my english

 

CrystalCPU is free.

 

I sent Stefan a bribe to do Intel CPU's
The kid does real fine work.

 

Originally Posted by Rainmaker in another forum
I'm a retard. I was trying to use Windows Magnifier to enlarge the dead pixel area to look at it better. I had it open for like 5 seconds, then like 'wait a minute'...


Like, I'm willing to host an underpixeling thread.

 

First thanks for the info and my SXPS 16 is much cooler.
One question though, I have set mine to the highest voltage of .9625 but I see in the monitor it goes to 1.137 at times.
I wouldn't think it would ever go over .9625.

 

Undervolting anyone?

Before...



After = I'm not done yet.

 

Well first off, thank you for this guide. It made a huge difference in my temps and power consumption. I've undervolted the top 3 of my P8600's 5 FID mulitipliers with good results but my Super LFM gives some weird readings.

It defaults to 6x with a selectable range from 6x- 9x and the voltage at .8750V, the lowest settings for the computer. It idles at 800mhz and if I select 7x, (the next step up, just to see what happens) the idle clock speed jumps to 2.1Ghz. RM Clock lists my CPU core and Revision as 'unknown'.

Everything else works great, has been reduced by a good amount of voltage and is stable. You guys are all reporting that setting the SLFM at 6x will cause your cpu to idle at 600mhz. Is this just an RM Clock glitch or some incompatibility with my system?

 

My P8600 using SLFM idles at 800, which is appropirate at one-half bus (normal idle would be 1600). 'Normal' 6X would be 1600, 7X should be running at 1866, 8X at 2133, and 9X (full speed) at 2400. I you are getting something different, then something may not be sticking correctly. Try forcing each multiplier to see if it is coming up correctly.

 

I'm sure this has been answered a lot, and is probably a painfully simple question, but do I need to run RM Clock at startup to get my voltage changes to take effect? Or even if its not running (but RM Clock power management is set on my battery) it will choose my undervolting settings.

Also, is it good for the CPU to continously be subjected to changing voltages? I mean, my CPU usage is frequently jumping from 15-40% usage (depending on what I'm doing) meaning the voltage will automatically adjust frequently to go with it. Is that healthy?

 

can someone put this in layman's terms and keep it down to 5 simple steps for a sony sr220? kthnx

 

If you read the first post it is step by step. If you are still struggling to understand then ask a specific question; but you do need to do the work yourself of at least trying to understand it.

 

Ok...I had installed this and set it up a while back but recently did a fresh install of the OS. I loaded the software put back the same setting I had previously and set it up to start in my task scheduler. All seemed great until I noticed that my voltages do not match what I set. Under profiles (POD) I see all the voltages I set but if I select the CPU info tab I often see a voltage other than what I set for the multipliers listed for current. I also noticed start-up and max are different than any voltage I have set. What am I missing?

 

And...here's the result!!!



That's on the max multiplier. I'll be testing the rest of the multi's for stability (8+ hours) later.

So from...91 to 67. You do the math. And it's probably 99.9% stable (if not 100%). That's 24 degrees cooler! PETE'S SAKE!

Notice how everything else is cooler too?

 

same here...

 

Yes RMClock needs to be running for the voltages to take effect. You can set the profile in the Startup drop-down menu on the Profiles page.

I don't think anyone has reported any problems, although some have argued it. I've just been using Power Saving (SLFM) and Maximal Performance (11x), and it's been working great for me.

 

How can I get RM to start automatically when windows starts?

Also, a kind of off-topic side question that relates to heat output: what kind of temps is everyone here getting on their harddrive? I have a 250GB @ 7200RPM and I feel like it might be running a little bit too hot. During a quick virus scan with AVG, it got up to about 46c. It normally sits at about 41c, which just seems to high.

 

My post directly above yours has the answer. I also spelled it out clear and simple step by step for someone else a couple more posts up..

 

Best way to get it to start is to set up a task via the task scheduler....that way you can set it to run with highest priveledges and not get the UAC prompt with every boot.

 

Ok so this is weird, I have it setup to start on startup and all 4 boxes checked on performance on demand with superLFM 6x at .875v and regular 6x-9x at .975v. Now I notice in my system tray when it is fully red (running at the 9x multiplier) it shows the voltage at 1.125v....This hasnt always done this...I checked all my settings and nothing is set for 1.125v, even 9x shows as .975v. What the heck is going on here?

 

Quoting myself:

 

I just posted about the same thing....not sure if I missed something when I reinstalled everything but it seems as if the machine in still using the voltages shown on the CPU info tab...ie start-up and max. I don't remember this before and I have the same version of RM Clock installed so I am at a loss.

 

wlepse...yup, I have the same exact problem... sucks

 

Thanks Ferretwulf and AGlobalThreatsK.

 

YW, Shifty.

I did find one inconsistancy when using task scheduler for RMClock:

When I did the setup on my M1330 (VHP32) it ran at logon with no prompt.

When I did the setup on my Vostro 1720 (VHP32 configured task scheduler as a copy of the first setup) I got a prompt, but unchecking the 'Always ask before running this program box' let it run without a prompt thereafter.

No idea why the difference between the two setups as they are configured, for all intensive purposes, in an identical manner.

 

Happened to me too. After re-intall, I forgot to clear the "Restore" boxes in Management.

 

The half-multiplier thing was a big issue when I joined and I might have missed someone's solution but I was able to retrace my steps to fix it it for myself with RMClock. Here goes. At first, I enabled IDA to get an 11.0X FID box. My T8100 CPU is really a 10.5X. After selecting the 11.0X box and restarting, I UNchecked the IDA box. Now, I get a stable 2100 MHz with no IDA blips in voltage. On one screen, it says I'm at 10.0 and another says I'm at 11.0. Who cares. I'm at the max CPU speed and it's confirmed by two other utilities.

 

So far that doesn't seem to be working for me...maybe I need to go through and reinstall RM CLock and then try again. Maybe some other setting also changed that I need to revert back to defualts???

 

Another lil' bear trap is your BIOS. Turn off any control over CPU speed and let RMClock do the driving. Also, in Power applet? in Control Panel, set it to RMClock control. I'm no expert, but I twiddle the knobs real fast. Let me know how you do

 

OK only read the first and last page but I wanted to know if the no half multiplier step problem still persisted. I see Scott got over the problem for maximum but surely the CPU will still use the other half steps when in normal use, so at time will be using the higher voltages, no? Or as there is no box to tick in RMClock does it miss them, or does the CPU not actually work with those steps anyway?

Secondly I have noticed you link directly to the programs rather than the download page where updated versions would be available. Is there a reason for this? Is there no updated versions of any of the programs that would be worth grabbing?

 

Flipfire and others have gone into intricate detail about how RMClock is 2 years old and why the prospects of an upgrade are slim to none. Apparently, Intel started using half multipliers after RMC 2.35 was completed and so the program doesn't recognize them. My "kludge" works for me because, after undervolting, my CPU won't exceed 67C at 100% load at full speed. I am just baffled why anyone would want to run their laptop at less than full speed unless it overheats. So I don't. After all, battery life depends only on load not the clock frequency. Anyway, I've tried CPUGenie, which does recgnize half multipliers but so far I've had instability problems and reversions back to "low gear". I haven't tried Notebook Hardware Control because no one has written the special configuration package for my model. So, I'm stuck at full speed with RMC (and loving it)

 

Scott...thanks I will try that tonight...I did update teh BIOS while doing the reinstall so that could be it.

 

hi everyone,
thanks for this great thread.
my hp pavilion dv5 T5800 heat problem resolved using RMclock
now my CPU idle 38-42 C / load 68-71
before undervolting idle 44-52 / load 79-83

i think hp should ship their laptop with RMclock preinstalled!!

 

Thank You Sooooooooooooooooooo Much!!!!

 

i have an P8600 Processor , working at full speed at 1.0V from standart 1.225V. Tested in hours of UT3. everything stable. The problem was insufficient cooling of cpu and with UT or something heavy running, cpu started to throttle, now everything ok. Thanks for a guide.

 

anyone know if there are guides to the programs that have half multipliers?

 

Hi! Thanks for the great guide, it helped me a lot, my ~65 P8400 load temperature have dropped to ~55 (and 60 with OC).

However, I seem to have a problem. I managed to lower the voltage for 8x to 0.9875v, and under full load (Orthos) it keeps that voltage, but under normal usage i get voltage spikes to 1.0v and 1.1375v (my original voltage).
Anyone else having this problem?
The P8400 has a highest multiplier of 8.5, does it have anything to do with this? Is it possible, that the CPU sometimes goes to 8.5x, so the voltages I set in RMClock dont apply anymore?

Thanks in advance!

 

I am having the same issue...95% of the time the voltages are as I set them but on occasion you will see differing voltages. They seem to match the voltages shown on the CPU info tab for start-up and max. One poster suggested I make sure on the Management tab that the two Restore CPU defaults are unchecked. I did this but it didn't fix my issue. Overall all though my temps are lower so if I don't fix this I guess it doesn't matter much.

 

Set the minimum CPU frequency to 100% (the same as max CPU) under Vista's Power Management options (in Control Panel - i.e. Advanced Settings in your 'Balanced'/'Performance'/etc. profiles) to eliminate the voltage spikes.

 

I'll give that a shot and see what happens.

 

I also suffer from voltage spikes, which make me nervous. I change Vista's CPU to 100% but there are still voltage spikes.
EDIT: In CPU Info page, I see maximal VID is 1.1750, which is higher than my VID of 0.9875 for 9.0x. Voltage spikes still happen.

 

I don't use Vista because my doctor won't let me take aspirin or Advil anymore, but as I posted before, the thing that worked for me was to select an FID of half a point higher than my T8100 really has and then turn all the IDA stuff OFF. Yeah, I know, "how can you select an IDA - FID and then turn it off ?". I just figured RMC wouldn't know and simply run at the top available speed without the overclock spiking. Worked for me.