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Windows 7: Overclocking help


07 Sep 2009   #1

Windows 7 Ultimate 64-Bit (Build 7600)
 
 
Overclocking help

I used to be able overclock my CPU quite a lot, from 2.83 GHz -> 3.6 GHz. But now, when I am in the Windows environment, (and I have a program to show me) it tells me the speed is 2550 MHz, but then after a second or two, it jumps to 3610 MHz. It used to stay at 3.6 GHz, but now it's all over the place, jumping UNDER the stock speed -> above stock speed. What would be causing this? It stays fine in the BIOS and reports the nice 3.6 GHz, but as soon as Windows starts, it jumps. I figure it's a program, but I removed the program that seemed to cause it. Any ideas?

Thank you.

~Nicane

My System SpecsSystem Spec
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07 Sep 2009   #2

ultimate 64 sp1
 
 

your cpu slows itself down when not in heavy use to save power and heat.

as soon as your cpu needs to do something, the clock speed rises to max value.

you can control this behaviour in your bios - i forget the exact setting. let me reboot and have a look...
My System SpecsSystem Spec
07 Sep 2009   #3

Windows 7 Ultimate 64-Bit (Build 7600)
 
 

It doesn't do that though. Like when I am running games or compressing or something, it still does this. Even when it's at 50% usage.
My System SpecsSystem Spec
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07 Sep 2009   #4

ultimate 64 sp1
 
 

go to your bios and turn both EIST and C1E off - they'll probably be buried in a sub-sub menu somewhere.

EIST = enhanced intel speedstep technology
C1E = enhanced cpu state 1
My System SpecsSystem Spec
07 Sep 2009   #5

Windows 7 Ultimate 64-Bit (Build 7600)
 
 

Ohhhh thank you. I don't have an option for EIST, but C1E was enabled. I don't know why I enabled that. But thank you very much. Now it's staying at a nice and even 3,613 MHz.
My System SpecsSystem Spec
07 Sep 2009   #6

Windows 7 x64 RTM Retail
 
 

If you have EIST enabled then in your Power Plan you will have two added entries for CPU processor. A minimum and maximum speed. This will make Windows 7 (and maybe even other programs) adjust CPU speed according to what you set.

If you set both to 100% then it negates EIST.
My System SpecsSystem Spec
07 Sep 2009   #7

ultimate 64 sp1
 
 

Quote   Quote: Originally Posted by Nicane View Post
Ohhhh thank you. I don't have an option for EIST, but C1E was enabled. I don't know why I enabled that. But thank you very much. Now it's staying at a nice and even 3,613 MHz.
glad to be of help
My System SpecsSystem Spec
07 Sep 2009   #8

 

Why would you want to disable this CPU life prolonging feature?

If you are running something that needs the power, the power will be there. When the power is not needed, the CPU will cool down, prolonging its life span.
My System SpecsSystem Spec
07 Sep 2009   #9

Windows 7 Ultimate 64-Bit (Build 7600)
 
 

It doesn't do that though. It just jumps back and forth every second or two, even when I'm not doing anything. And who cares about the life? Might as well use what I can with it and buy a new one in a few years when this one is outdated anyway.
My System SpecsSystem Spec
07 Sep 2009   #10

Windows 7 Ult, Windows 8.1 Pro,
 
 

Quote   Quote: Originally Posted by Antman View Post
Why would you want to disable this CPU life prolonging feature?

If you are running something that needs the power, the power will be there. When the power is not needed, the CPU will cool down, prolonging its life span.
Another reason is that when overclocking the speed step and C1E halt state can cause instablity with the overclock.

Sometimes you can run them when overclocking other times it just won't work. No doubt they are handy features for saving power.
My System SpecsSystem Spec
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