Laptop Run "COOLER" & Battery last "LONGER"

This is pretty cool. I tried this on the Asus Z71v. You should give it a shot. Highly recommended. Here are my results

Before Using This Method:
CPU Idle @ 57c -> 1.308v (stock voltage)
100% CPU temp average 67c - 69c

After this Method:
AC Profile Max @ 1.132v idle around 54c
AC Profile Max 100% CPU Temp average 60c @ 1.132v

Summary:
Lower CPU Temp by 7c - 9c in 100% CPU Utilization. On idle, lower temp by 3c.

Extended battery life by 15%!!!!

By Needledik
http://notebookforums.com/showthread.php?t=70943
<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>
This thread is intended to be a simple tutorial for undervolting your Pentium M (Dothan) laptop. Undervolting the CPU reduces power consumption, thus allowing your laptop to run cooler and increasing battery life. I was able to adjust the minimum voltage of my Pentium M 760 (Dell Latitude D810) from 0.988V to 0.700V and the maximum voltage from 1.308V to 1.068V. Your mileage may vary!

1.) Download RightMark CPU Clock Utility (RMClock) from http://cpu.rightmark.org/ and Prime95 from http://www.mersenne.org/freesoft.htm
2.) Unzip the programs to the directories of your choice (I use /program files/rmclock/ and /program files/prime95/).
3.) Launche Prime95.exe, download and begin calculations, minimize the window (you should see a red icon in your system tray), then launch RMClock.exe.
4.) Click on the "General" tab and note your default voltages (mine are "Startup" and "Minimal" at 0.988V and "Maximal" at 1.308V).
5.) Click on the "Management" tab.
6.) Select the "Use P-State Transitions (PST)" box. Intel 855 and 915 chipset users may need to select "Run HLT command when the system is idle" (I did). Do not select or modify any other options.
7.) Make sure "Minimal FID" is at the lowest number (6.0x in my case) and "Maximal FID" is at the highest number (15.0x in my case).
8.) Change "Profile" to "Maximal" and click the apply button.
9.) Now click on the "General" tab and ensure that "Actual Clock" is your maximum processor operating speed (1995.16 Mhz in my case). Return to the "Management" tab.
10.) Decrease the "Maximal VID" (1.308V in my case) by one stepping and click the apply button.
11.) Ensure that Prime95 is still running without any errors. An error will look something like this: "FATAL ERROR: Rounding was 0.5, expected less than 0.4" or "Hardware failure detected, consult stress.txt."
12.) If you do not encounter any errors after a few minutes, return to RMClock and decrease the "Maximal VID" by another stepping.
13.) Continue decreasing the "Maximal VID" and checking Prime95 until you encounter an error. Make sure to press the apply button with each change.
14.) Once you encounter an error, raise the "Maximal VID" by one stepping.
15.) Then allow Prime95 to run for a few hours. If you receive an error, increase the "Maximal VID" by another stepping and run Prime95 for a few hours until you do not encounter any errors.
16.) If Prime95 runs for a few hours without encountering any errors, you have determined the lowest possible CPU voltage at maximum processor speed (1.068V in my case). Write this number down!
17.) Now change "Profile" to "Minimal." Repeat steps 9-15, except for "Minimal VID" instead of "Maximal VID."
18.) If Prime95 runs for a few hours without encountering any errors, you have determined the lowest possible CPU voltage at minimum processor speed (0.700V in my case). Write this number down!
19.) Change "Profile" to "Automatic Management" and select your recorded "Minimal VID" and "Maximal VID" values (0.700V minimal and 1.068V maximal in my case). Press the apply button.
20.) Select the "Advanced" tab and select "Apply these settings at program startup" under the "Misc Settings" area. Do not change any of the other settings. Click the apply button.
21.) Right click the RMClock system tray icon and select "Run Automatically at Startup" and "Start Minimized to Tray." You also may want to unselect "Force Minimal Profile on Batteries."

I will post my system improvements (battery life, CPU temperature, fan speed, etc) soon. People have reported amazing results, such as their CPU fans no longer activating at 0.700V, significant battery life improvement, and a noticable decrease in CPU and laptop temperature. Please let me know if this works for you and the results you are able to acheive. Good luck!

EDIT: Here is my data thus far (all under 100% CPU load for 5 minutes):

Minimal Speed:
Maximum CPU temperature @ 0.700V - 100 F
Maximum CPU Fan Speed @ 0.700V - 2399 RPM (variable on/off)
Maximum CPU temperature @ 0.988V - 107 F
Maximum CPU Fan Speed @ 0.988V - 2410 RPM (always on)

Maximal Speed:
Maximum CPU temperature @ 1.068V - 114 F
Maximum CPU Fan Speed @ 1.068V - 2422 RPM (always on)
Maximum CPU temperature @ 1.308V - 132 F
Maximum CPU Fan Speed @ 1.308V - 2944 RPM (always on)
<hr height='1' noshade id='quote'></font id='quote'></blockquote id='quote'>

Laptop: Asus Z71V From www.proportable.com
* Intel® Pentium® M 750 - 1.86GHz
* 2GB DDR2-533 Corsair
* Hitachi Travelstar 60GB 7200 RPM w/ 8MB Buffer
FAQ Most asked about laptops: http://notebookforums.com/showthread.php?t=61505

 

I did appreciate that IM with this info.... thanks for posting it in here.

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

By the way, if you have the RMClock running, no need to run speedstepXP or Powergear as it has a function to autoclock for you if you enable it.

For me, I left the AC Profile to No Management, which keep it a max clock.

Laptop: Asus Z71V From www.proportable.com
* Intel® Pentium® M 750 - 1.86GHz
* 2GB DDR2-533 Corsair
* Hitachi Travelstar 60GB 7200 RPM w/ 8MB Buffer
FAQ Most asked about laptops: http://notebookforums.com/showthread.php?t=61505

 

PowerGear does more than just auto clock..... speedstep auto clocks.... powergear lets YOU set the clock speed AND the LCD brightness...... you don't want to lose that.

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

... that is true... yeah, you're right.. heck with it..... put it all on autopilot!

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>Originally posted by PROPortable

 

With my M6 (see sig for specs) I was able to get
1500 MHz: 0.940 V
600 MHz: 0.700 V

ASUS M6800Ne, P-M 1.5 Dothan, 512MB Ram, Toshiba Combo drive, Samsung Spinpoint M 40G HDD with 8M cache, Mobility Radeon 9700

 

For my M6Ne I got 1.148V max, .7V min.

So far everyone I've seen reports success running at .7V on minimum settings...



old: Sony PCG-GR300P 1.13GHz PIII-M, 512MB
new: Asus M6Ne 2.00GHz P-M, 2GB

 

very nice

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>Originally posted by highlandsun

 

<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>Originally posted by AuroraS

 

I get around 41 degrees idling temps with 0.700 V running at 600 MHz... and at 1500 MHz full load, I get max temps of 53 degrees.
I'm very impressed by this undervolting

ASUS M6800Ne, P-M 1.5 Dothan, 512MB Ram, Toshiba Combo drive, Samsung Spinpoint M 40G HDD with 8M cache, Mobility Radeon 9700

 

<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>Originally posted by AuroraS

 

Arctic Silver isn't as great as undervolting, in my opinion...[ ]
From my experience, Arctic Silver doesn't make that huge of a difference... 3 degrees at most. Barely ever a 5 degree difference.

ASUS M6800Ne, P-M 1.5 Dothan, 512MB Ram, Toshiba Combo drive, Samsung Spinpoint M 40G HDD with 8M cache, Mobility Radeon 9700

 

On a Centrino system it doesn't make much sense at all.... I use it over a thermal pad on my own systems becuase I often swap cpus to try out different setups..... but it's not bringing the temps down much at all... and Centrino's work within the normal operating temps anyway.... which means life and performance aren't going to be increased anyway.

I just use it because a thermal pad would need to be replaced every time I remove the cpu and you can reuse AS... and it's easier to clean off.

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

yeah.... you really don't need it on your system... but they're ok.


We sell the Antec cooling pads.. those work really well.. but the Z7 and W1 are both too big for them.

Thanks,
Justin
PROPortable
www.proportable.com
[email protected]

 

<blockquote id='quote'> quote:<hr height='1' noshade id='quote'>Originally posted by PROPortable

 

ya know, i've asked this question twice and nobody has answered... has anyone underclocked their GPU (for powerful GPU equipted laptops like the W3N/W3V/M6) to see if it improved battery power? Perhaps Justin can comment on this?

I've managed 0.7v@600MHz and 0.956v@top speed -- which is over 40% lower voltage at high performance!! It equates to over 1hour 15 minutes gain with my laptop (and when the battery was new, i'm sure it would have equated to almost 2 hours of gain or 7-9 hours of battery power on one battery!!) I've had this laptop for over 7 monthes (using it on battery for about 10-15 hours a week, so many charge cycles, and now with this utility, i still have 5.5-6 hours of battery power!)

Asus M3NP 1.5GHz Centrino (Dothan /w 2mb L2)
1GB PC2700 DDR
40gb 5400rpm 8mb Cache Seagate Hard Drive /w 5 Year Warranty
Intel 2200BG 802.11g Wireless

 

> has anyone underclocked their GPU (for powerful GPU equipted laptops
> like the W3N/W3V/M6) to see if it improved battery power?

It helps a little bit, but not very much on GPUs that has the PowerPlay options in the ATI controlpanel disabeled for some reason. Personally I use RadLinker (http://www28.brinkster.com/chrisww1942/) to underclock by default and reset to default clock on a per application basis. You can compare the battery discharge rate when underclocked and at default using MobileMeter (http://www.geocities.co.jp/SiliconValley-Oakland/8259/) to find out if it's worth the effort to you.

 

that's disappointing. I don't understand why it's soo difficult for graphics companies to get with it and make efficient GPU's. From a technical stand point, it should be quite easy since most of the GPU is dedicated to DirectX and OpenGL pipelines and GPU's are running at much lower frequenecies than CPU's.

So if they could dynamically turn 3D and video acceleration on and off, they could drop the voltage to extremely low values like 0.5 volts @ 66MHz, consuming only a couple watts for 2D. Heck, if intel can design my dothan to dynamically and intelligently turn my upper 1mb of l2 cache on and off as well as have a CPU that can run at 1.5GHz @ ~0.9 volts, i fail to see why GPU's aren't keeping up.

I guess it's just not a priority to them...

Asus M3NP 1.5GHz Centrino (Dothan /w 2mb L2)
1GB PC2700 DDR
40gb 5400rpm 8mb Cache Seagate Hard Drive /w 5 Year Warranty
Intel 2200BG 802.11g Wireless

 

Don't blame the graphics companies. They *do* have these features (underclocking, undervolting and more) implemented and they /should/ work 'automagically'. It's just that Asus, for some reason, is disabeling these features on most (if not all?) their notebooks. At least the ATI based models.

The fact of the matter is, however, that Asus really insn't denying their users much. When sitting pretty much idle rendering only the 2D desktop a graphics chip doesn't consume all that much power to begin with. The difference was something like 5%, around 10 minutes, between PowerPlay at max savings and disabeled when I tested on a nx7010 with a Mobility 9000 a while back. And in 3D you'll want all the performance you can get, so it's really a moot point there.