Core Duo Undervolting Guide?

I swear there was one but I cant find it. I searched abd everything!

Help!

Also what would be a good program to undervolt with?

Thanks!

 

hey. running a z96j core duo undervolted. notebook hardware control works well for me.

 

Hmm ive bin looking for some thing that will under vote my core duo but i dont realy like NHC that much dont now why just dont -_-

 

Can you please tell me the settings you have?

 

hey there!

6 and 7 are both .9750
8 is .9875
9 is 1.0125
10 is 1.1375
11 is 1.1625
12 is 1.1875

they're a little high. but it's froze here and there and so i upped them to make sure.

i'd use the other one. but this works better on my z96j

 

thx .....

 

Generally, fewer undervolt requiremnet from Core Duo vs. Turion. Because most BIOS and MOBO maker handle Core Duo pretty well so you won't get so much gain in term of battery life.

RMClock works for lot of CPUs.

 

I've been running a T2300 with max voltage of 1.05V (two steps above where instability started) using RM Clock for about 6 months with no problems. I'm annoyed that I can't drop the minimum voltage below 0.95V. This seems to have been nailed down by Intel.

John

 

Someone write an "Undervolting a Core Duo for Dummies" step-by-step guide, please! Thank you.

 

I use RMClock usapatriot, have a look:

(notice .987V is the highest I go on the 12x and 11x multipliers)

 

I'll see what I can do over the next few days to bring together and update what is scattered around other threads.

John

 

That would be awesome! Thank you very much. By the way, I wasn't kidding about the "for dummies" part.

 

How do I modify the VID in that picture? I only have VID of 1.25 for my T7200!

Yes please, a guide to undervolting a Core Duo!

 

To change a VID in RMclock, go to the Profile main page then click on one of the index entries. See the attached. I just change the bottom entry and let RMclock auto-adjust the other voltages.

Work has so far got in the way of me putting together an undervolting guide. I got as far as digging out other forum threads discussing the subject. They are:

http://forum.notebookreview.com/showthread.php?t=105278&highlight=Undervolt+RMClock

http://forum.notebookreview.com/showthread.php?t=113653&highlight=RMClock

http://forum.notebookreview.com/showthread.php?t=18089&highlight=RMClock

http://forum.notebookreview.com/showthread.php?t=113653&highlight=RMClock

http://forum.notebookreview.com/showthread.php?t=39485&highlight=RMClock

http://forum.notebookreview.com/showthread.php?t=60914

Hope this helps (if you are using RMclock).

John

 

Hey John, thank you for the links to the guide.

I have set my maximum multiplier of 12x to a value under 1.25v. However, when I click on the general tab to see if the setting have been recorded/set successfully, under "Maximal", I still get 12x = 1.25v, while the rest are set to the lowest = 0.95v.

Am I doing anything wrong here?


Thanks for the help!

 

On the Maximal Performance page have you selected use P state transitions and then selected all the index values?

On the main profiles page you also need to have selected Maximal Performance as the profile to use.

Personally, I have everything set to performance on demand.

If you still can't figure it out, I suggest you attach a screen dump of the problematic RMclock screens so I can see what is showing up.

John

 

Hi John, yes, I have selected that, as well as for Performance On Demand.

Along with Performance On Demand as well?

Here are screen dumps of my settings:



First box shows 12x = 1.25volts!

Thanks!

 

what have you set your profile to?

 

1. The Maximal column in the first box shows the design maximum voltage of the CPU (each CPU is individually set in the factory - my T7200 says 1.187V.

2. So what is the CPU actually doing? It seems to be running at 6x (1GHz) at 1.0V, which doesn't make sense to me.

3. If you want maximal performance to be continuously running at 12x then on the maximal performance page select the 12x only and nothing else (maybe this is what you have done, but the 6x is out of the top of the scroll box). when I select the 12x only then the CPU runs continuously at full speed.

4. You have selected the Performance on Demand profile when running on battery. However, you have not set up the battery version of this profile (each profile has a separate mains and battery column).

5. Take a look at the monitoring graphs. These should show what the CPU is doing. Try the Performance on Demand profile and see how the speed goes up and down according to activity.

BTW, RMclock is now at V2.25.
John

 

To put it simply, I need to:

Find the lowest stable VID at the lowest multiplier

AND

Finf the lowest stable VID at the highest multiplier

Is that correct? If it is correct, why do we need to find the lowest VID for the highest multiplier? Wouldnt the lowest VID with lowest multiplier be enough?

 

Yes, to both questions in general. But Intel has blocked lowering the VID with the lowest multiplier. So @ 6x multi(1.0GHz) you wont be able to decrease the VID from the default 0.95V. Actually 0.95V is the lowest you can probably go with any multiplier. So, your only options are to change the VID on the higher multipliers which doesnt help in extending battery life but will reduce the heat output when running at full power.

 

Thank you for the reponses! Looks like the lowest I can go is 0.987, as 0.975 gives errors in Prime95. So 1.000 volt looks good!