Undervolting AMD Turion 64 x2 Mobile Technology

[Deschain]

Hello everyone, my first post here, so I hope everyone can bear with me. I'm going to try to post as many resources as I can to make helping me easier, but if there's something I don't post that you need, let me know.

I've recently become interested in my making my CPU run more effectively, quietly, and less hot (cooly didn't sound good...). This interest has stemmed from a recent problem I've been having, that my processor was making obnoxious, insect-like noises that were driving me insane. I downloaded this program called RMclock, by Rightmark, and I've been toying around with it.

My first attempt involved me checking "run HLT command when OS is idle"
This, while it made the noise a little more quiet, didn't get rid of it. I had to uncheck the option "enable cpu low power" to achieve silence.

However, after making my computer quiet, I became interested in making it not so hot. I have an HP, and they tend to overheat quickly. I do keep my propped up, though, so plenty of air can get to the fans. With me sitting here typing this, and aim, and notepad open, my computer is setting at 54 degrees celsius (measured by RMclock). When I run prime95 to stress test it, it reaches to about 75-78 degrees celsius, with prime95 running for nearly an hour. Now, the 75 degrees for an hour under prime95 doesn't sound so bad to me, but the 54 (sometimes as much as 60) when just doing things like surfing the net and chatting seem to be very high.

So, I have attempted to undervolt.

These are the tools I am using to do so:
(1) RMclock
(2) http://www.nordichardware.com/Articles/?skrivelse=465
(3) http://www.winhlp.com/rmclock.htm
(4) http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf

From the information in reference (4), I can see that the allowed pstates for my cpu are... Max: 1800MHz (the x9 option in RMclock), the intermediate one is 1600MHz (the x8 option in RMclock), and the lowest is 800MHz (the x4 option in RMclock). It also gives the suggested voltage for each of these in reference (4).

So, here are screenshots of RM clock after doing these changes:











Now, the oddness. As you notice, my x9 setting is 1.150 volts, but the (4) says that my processor should do arond 1.166 - 1.200 volts for that setting, but the option for that is not available in RMclock.

Also, when attempting to lower the x4 volt setting, I was able to get down to around .775, any lower than that and my computer began to shut itself off. I'd like to leave it at .800 to be safe.

However, the main problem is that this did not make my computer run cooler, in fact, the temperature of my CPU -increased-, averaging around 65 degrees celsius with these changes.

Also, today, while doing -nothing at all- but chatting, my computer turned itself off. The power cable light remained on, but my computer was, in all ways, dead. Needless to say, this scared the hell out of me. My computer is only a little over a year old, and was quite expensive. I restarted my computer, opened RMclock, and realized I had left my AC power profile in "power on demand", which was set to the default values, which was 1.150 V for every FID. I'm not sure if this could have caused the random shut down or not, but I have since changed my AC power profile back to "maximum performance." It's been a few hours, and my computer hasn't killed itself again.

Any help is greatly appreciated, even if it's "just quit while your computer is still alive." I just hope I have not permanently damaged anything by doing this, as having my computer randomly turning itself off while using it or doing work on it would not be tolerable, and neither would be buying a new one.




Here are my system specs, taken from run/dxdiag:
------------------
System Information
------------------
Time of this report: 11/7/2007, 18:04:15
Machine name: THOR
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_qfe.070227-2300)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP Pavilion dv9000 (EW635AV#ABA)
BIOS: PhoenixBIOS 4.0 Release 6.1
Processor: AMD Turion(tm) 64 X2 Mobile Technology TL-60, MMX, 3DNow (2 CPUs), ~2.0GHz
Memory: 2046MB RAM
Page File: 417MB used, 3521MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode[/img]

[Wizzard1]

Undervolting cant damage nearly as much as overvolting- Read up here:

http://www.pcstats.com/articleview.cfm?articleid=1798&page=2