The "Undervolting" Guide

[flipfire]

The multipliers that are ticked in the main profile page is what the CPU is able to use.

6x - 1.2ghz
7x - 1.4ghz
8x - 1.6ghz
9x - 1.8ghz
10x - 2.0ghz

If i wanted to underclock to 1.6ghz, i have to untick the 9x and 10x multipliers so the CPU cant use them thus making 8x the highest speed. Speedstep will still use 6x-8x multiplier because they are ticked.

When you do the stress test, it should max out at 1.6ghz

If you want to completely lock your processors speed then youll have to use the Maximal Performance profile.

[Tusin]

Ok, what I am trying to say (and I probably said it wrong, long day at work), is that even if I ONLY have 10x ticked. My multiplier will still jump between (and only between), 10x and 6x. And it will do it really really fast over and over.

[flipfire]

I suggest using the Power Saver or Maximal Performance profiles because these profiles will only let you use 1 multiplier.

Performance on Demand was made to switch to different multipliers

[stewie]

Put the same voltages. I have dual-boot xp/vista and it worked like a charm with same voltages.

Cool, thanks a lot!

[Tusin]

I suggest using the Power Saver or Maximal Performance profiles because these profiles will only let you use 1 multiplier.

Performance on Demand was made to switch to different multipliers

Even if only one multiplier is selected?

Anyways, I THINK I might have figured it out. I was using Notebook Hardware Control prior to this. And it looks like NHC and RMClock pretty much do the same thing (even tho NHC did not allow undervolting on my machine). But when I posted my question, I had NHC setup to load when windows started. And even tho I would close it out and use RMClock, I think it still left something going on in the background. Because now that I have disabled auto-start we are looking good.

Oh and again thanks for the guide Right now I have 1v stable on 10x

[Tusin]

Oh, and anyone Intel "TAT" tool to test stability? I just noticed with Orthos, it didn't really matter which test I used I was still able to "use" the computer. As in just browse the web, etc.... But with the "tat" app, if that is running, my computer comes to a crawl.

[flipfire]

Good to hear

NHC will conflict with RMclock, only 1 CPU utility tool should be active.

ORTHOS is sufficient enough but use TAT if you want. Aslong as its putting 100% CPU load and stressing the CPU at long periods. Im not sure if TAT stresses both cores though... TAT probably puts extra OS load which makes the computer crawl

[Tusin]

Ahh I see. Now I just need to find a way to change the HD setting like you can in NHC, that stops the HD for clicking all the time. And yeah "TAT" (I keep wanting to call it something else lol), allows you to do either core. Or both at the same time. It's actually a pretty cool tool, if you want to check it out if you are bored.

[stewie]

Hey flipfire,

I read your reply to mair's post in this thread. I understand that it's good to give a little margin. For my highest multiplier, I did similar tests like mair's, it is stable at 1.000V, when I tried 0.9875V, I did not get any BSOD, but I got an error/warning from ORTHOS. Do you treat an ORTHOS error/warning the same as a BSOD? If yes, I guess I should set it at 1.0125V instead of 1.000V?

Thanks.

[flipfire]

If 1v is stable. I suggest setting it to 1.012v so its rock stable.

An extra .012v wont make much of difference anyway