Understanding CPU-z

[JackAttack]

Another question...
I un-clocked my machine CPU temporarily. I was running it at 4.05GHz and I reset it to 3.0GHZ. I did this because I want to play with CPU-z and understand it better, so I am starting from scratch, stock default is 3.0GHz.
Here I took two screenshots of my pc, both taken within 15 seconds of each other. No reboot in between the pics.

The Core Speed and Multiplier values keep changing while I am working.
Is this normal or is this possibly due to my motherboard settings?
I ask this because this mobo has a throttle back feature installed which is called EPU-6 Engine. It is for energy savings. Intelligent Detection - Automatic Moderation is what this is about.
Do you think the EPU-6 is causing the values to change?
Thanks,
Jack

 

[Kantastic]

Did you leave SpeedStep on? Turn off all energy saving features if you want to have a stable overclock, they don't play well with eachother.

 

[cdawall]

speedstep is enabled which lowers your multi to save power

 

[JackAttack]

OK,
I am slowly resetting my BIOS to overclocked. I started with 3.6GHz and will work my way back up to 4.0GHz.
Does everything look ok so far?
Is the core voltage too high?

Thanks, jack

 

[Error 404]

Highest I would recommend for 24/7 clocks is ~1.44 volts, although I've ran my E5200 at 1.51 volts for a few months with no harm...

 

[JackAttack]

Thanks Error 404, thats the kind of info I need.
I did run at 4.05GHz for a few weeks with no errors, but I forgot what my voltage was.
I do want to run it 24/7, also.
So now I have a good number to work with..1.44v... thanks.

 

[JackAttack]

Did you leave SpeedStep on? Turn off all energy saving features if you want to have a stable overclock, they don't play well with eachother.

OK done, all ES features are now off.
Thanks,
Jack

 

[hat]

Yeah, clockspeed switching like that is the result of energy efficiency features. It clocks down and drops volts when no heavy work is being done to save power, heat and energy.

I would try not to go over 1.4v with 45nm. What voltage were you using at 4GHz? Are you sure it was absolutely stable? If so, maybe you can try dropping your voltage a bit.

 

[JackAttack]

Yeah, clockspeed switching like that is the result of energy efficiency features. It clocks down and drops volts when no heavy work is being done to save power, heat and energy.

I would try not to go over 1.4v with 45nm. What voltage were you using at 4GHz? Are you sure it was absolutely stable? If so, maybe you can try dropping your voltage a bit.

Well, because I am new to all this oc'ing stuff, I was not smart enough to write down the voltage I was running, so I don't remember.

I believe it was stable, as I ran it for a few weeks that way.
I was running Vista then, went to Win7 now.

I didn't have CPU-z then...makes life easier. All I have for reference to the 4.05GHz is a snapshot of 3DMark I took.

 

[hat]

Hm... well I guess you're stuck with doing the process all over again.