i7 multiplier never goes down to "x16" when overclcoked.

[nks]

hi,
i have recently purchased a i7 3770k and msi mpower z77 mobo.
my system specs
CPU - i7 3770k (at stock and every setting in bios to default)
mobo - msi mpower z77
cooler - Noctua NH d-14
ram - 4gb 1666 mhz gskill ripjaws cl9 (will be upgrading to 32 gb in few days)
GPU - 670 gtx (at stock(
PSU - 550 watt cooler master

today i tried to OC my processor.
i increased the multiplier to *42 and it worked like a charm.
now the problem is that the multiplier is not dropping at idle. the voltage reading in CPUz comes down but the multiplier is not dropping.

before i7 i was using AMD phenom 965 and even if i OC it to 4 ghz its multiplier use to come down at idle.

so please suggest

intel processor are meant to run this way at OC??
or i need to do some settings in bios??
(I AM USING THE LASTEST BIOS)

 

[dma0991]

Enable Intel SpeedStep(EIST) and set C states in BIOS. It should reduce its clockspeed gradually. However, voltage will not scale down when overclocked as MSI does not implement offset voltages.

 

[StrangerGuy]

Dunno about your BIOS, but IINW base multipier should be left on default while the turbo multipiers are set to whatever overclock you want, and EIST + speedstep must be on.

 

[nks]

Enable Intel SpeedStep(EIST) and set C states in BIOS. It should reduce its clockspeed gradually. However, voltage will not scale down when overclocked as MSI does not implement offset voltages.

i am not able to find intel speedstep in bios.
i have searched for it many times.
is it denoted by any other name in the bios???
and on my mobo voltages are going down at idle compared to at full load by prime 95

 

[dma0991]

i am not able to find intel speedstep in bios.
i have searched for it many times.
is it denoted by any other name in the bios???
and on my mobo voltages are going down at idle compared to at full load by prime 95

It can also be labeled as EIST/Intel Speedstep, at least that's what Click BIOS is telling me. Not sure how different MPower Z77 BIOS will be but it shouldn't be all that different with mine. As for C states, look at the last option in the OC settings tab. It should have a label CPU features. Both settings should be under the OC settings tab.

If it scales with clockspeed then its fine as it is on auto voltage. Higher overclocks require manual voltage setting. Setting the voltage manually will not allow the voltage to scale with clockspeed.

 

[nks]

Okay I found exist and it is enabled
But still my CPU multiplier is not dropping to lower levels at idle

Also I have changed the multiplier for every core from the CPU feature option
And on the main page I have left it to auto
Is it okay????

 

[nks]

I found this on another forum
Do I have to play with offset voltages ??
http://www.hardwarecanucks.com/forum/cpus-motherboards/58464-msi-mpower-z77-4.html

 

[Idontcare]

If the phase control is set to "Extreme" then it will prevent the CPU from downclocking when idle. I don't know why, it is just an observation, so it could be right for all the wrong reasons. Look for something in your BIOS that relates to phase control and if it is set to auto then change it to something that says "standard" or "optimized" but avoid leaving it at Auto and avoid putting it to "extreme" or "max". See if it makes a differnce, if it doesn't then you can set it back to whatever it has been all this time.

 

[Ketchup]

Look in the BIOS, and make sure the following settings are enabled in the OC menu:

EIST
Intel Turbo Boost
Power Technology
C1E Support
Intel C-State

And in ECO menu:
CPU Phase Control
Intel C-State

Does that help?

 

[nks]

Look in the BIOS, and make sure the following settings are enabled in the OC menu:

EIST
Intel Turbo Boost
Power Technology
C1E Support
Intel C-State

And in ECO menu:
CPU Phase Control
Intel C-State

Does that help?

After enabling all the above
The volatage is coming down but multiplier is still at 42 at idle.

 

[nks]

I did what was told in this link
http://www.hardwarecanucks.com/forum/cpus-motherboards/58464-msi-mpower-z77-4.html

Now the multiplier is dropping but core voltage in CPUs is not dropping. For 4.3ghz I have set it to 1.15v and CPU z is showing core volatage as 1.136

But VID in core temp is dropping with the multiplier

So now what should be done ??

 

[Ferzerp]

Slightly off topic, but some asus z77 boards, in later bios revisions (not the original) implement an "automatic" state for the settings for downclocking. On them, "automatic" just means, if OC'ed, shut them off, otherwise, they're on. It confused me when I updated to a version with it, and no longer had downclocking. At leat they left in the toggles so you can force them on.

 

[john3850]

Go To Control panal and open power plan then change advanced power setting Minimum processor state and check to see if it at 100% if so lower it.
I also use intel extreme tuning Uutility or realtemp to view it not cpuz.

 

[dma0991]

A strange behavior of the current BIOS version from MSI doesn't respond well to downclocking when overclocked, even with EIST and C-states enabled. The behavior seems to be happening with the version 10.6. I flashed it to 10.8(latest) and the same happens. This wasn't the case with the original BIOS that came with my board.

Also, thanks to MSI giving the option of a multi BIOS update, I now have one corrupted BIOS. Don't quite understand the idea of giving the flexibility of updating a BIOS that was meant to be a fail safe. Now, I have to find a way to fix the other BIOS or be more cautious with the last one I have. :|

 

[nks]

Problem has been solved and if I have done anything wrong then please let me noe.

I set the CPU core voltage to auto
And I have increased the pll voltage to 1.700

Now CPU multiplier and voltage comes down when at idle.
But at full load the core voltages as per cpuz are 1.176v , these are quiet high as on maunal voltage settings I was able to achieve a full stable system at 4.3 ghz at 1.146v .

But after setting it to manual the CPU core voltage never comes down with the multiplier.
So I think setting it to auto is fine.

 

[2is]

Welcome to the world of MSI motherboards. They do not have an offset option so anything other than "auto" voltage will keep the voltage at whatever you set it, regardless of load/multiplier