underclocking a p9600

RMcpuclock only let me take the voltage from 1.1125v to 1.05v on all of the multipliers? Also cpu-z shows the voltage going from 1.225v to 1.163v when I make the change from 1.1125 to 1.05v in RMcpuclock? Which one is right? I need to know how to get the voltage lower in RMcpuclock or maybe use another program that lets me?

 

Try out CPU-Z version 1.41, other versions may not show correct voltage values on mobile CPU's. 1.163v most certainly means 1.05v is the actual voltage in CPU-Z.

How to get a lower voltage in RMclock, i have no idea. You can't usualy go lower if it's not letting you to choose a lower value. Though you should be able to go down to atleast 0.950v

 

Does the P9600 have half multipliers?

 

I'm using cpu-z 1.48? Should I get an older version? The processor is in a ms-1722 should I try and flash the bios or something? Rmcpuclock only goes to 1.05v for some reason.

 

I'm not sure if it has half multipliers. but it says it's running 2.66 so I don't think so.

 

Yes, otherwise i wouldn't have mentioned to get version 1.41.


Are you sure you aren't confusing the voltage in CPU-Z with the RMclock settings?

However, i don't think a new BIOS will solve your problem. I would first of all search in the thread: undervolting guide to see if someone else has had the same problem as you (there is a very big chance that someone has).

 

So how can I get RMclock to go lower than what it is letting me?

 

In RMClock, in the Adavanced CPU Settings tab there is an entry at the very bottom for "CPU Type Selection". Is that set to "Mobile"?

 

Yes it is set to mobile. But when I tell it to auto-detect it detects desktop? Also I tried to change the registry by adding unlockvid in the rmclock folder.

 

Ok, I got the voltage to go lower by creating registry UnlockVid and putting value to 1 instead of 0, but I can't get blue screen of death even on .7125v? Does this mean that I messed up RMclock? Also cpu-z 1.41 won't show anything under 1.05v or over 1.113v, which is what I could change before editing registry. So I guess I edited the registry wrong? Could someone please help me?

 

So I tried crystal and it wouldn't show any changes in cpu-z. Without any software running it runs at 1.05v and that is the lowest setting that works in RMclock. So I can't undervolt a p9600 just overvolt?

 

Ok, somehow rmclock permanently changed my multiplier to only 6x and the voltage down to 1.05v? If RMclock isn't running it won't go past 6x now? I really need some help on this one.

 

Did you follow the guide...

 

Yes I followed the guide for undervolting, but it won't let me go below 1.05v

 

This is what I mean:

Check the Multiplier field under Core Speed. What are your numbers?

 

The multipliers are 6-10. Both Crystal and Rmclock will only undervolt down to 1.05v, even though crystal displays it higher like versioin 1.48cpu-z. I really need to figure out how to undervolt this. It runs like 73c under load which is way to high for a 25w processor.

 

Not to take away anything from this thread or from your ventures, but there is really no point in undervolting a P series CPU. As a matter of fact, P series are just undervolted versions of T series CPUs (i.e a P9500 = undervolted T9400), and further undervolting would more likely make the CPU unstable compared to a T series.

To solve your thermal problems, make sure that the thermal conductivity is intact, and try a different thermal compound if you can.

 

Well I started out using what came with the heatsink, it ran the gpu at over 60c and the cpu at 58c under idle. Then I used Arctic silver 5 on everything and it dropped the gpu to 51c and the cpu to 51c. Then I undervolted the cpu from 1.125v to 1.05v and it droped the idle temp to 46c which is ok. It is completely stable at the maximum multiplier of 10x at 1.05v. So I know that I can take it lower at least on the lower multipliers. If the processor is hardcoded at 1.05v how can you break that? If not I guess I'll just sell this one and try again...Anyone want it? MS-1722, 4gb kingston hyperx, p9600, 8x dvdrw drive, WD 7200rpm 320gb, 5100 wireless. What do you think this is worth?

 

well, don't think this helps you but I just got my new Sager NP8660 ( Clevo M860TU) with a P9600 and my voltage range goes all the way from 1.075v to 0.875v with Rmcpuclock. 0.975 ran stable and dropped my temp 3C or 4C but 0.950v got me an instant BSOD. Good luck. Can anyone confirm that P9600 (2.66 GHz) doesn't have half multipliers? it makes sense 266 FSB x 10.0 multiplier = 2660 MHz... but i want someone smarter than me that knows for certain to tell me.

 

The CPU Info tab in Rightmark would tell you if the multis were halved.

 

It seems that Intel has locked "MY" P9600's lowest VID as 0.925v and any figure less than it to be void.

 

0.925v is normal for a minimum voltage. I have a T9500, and that's the lowest option for me as well. Realistically, setting anything lower than that will just lead to instability anyway.