i7 920 idle voltage when overclocked

[d4a2n0k]

Hi,

Ive had an i7 920 @ 4 ghz on an ASUS P6T Deluxe v2 running for the past 2 1/2 years. I have the voltage set to manual 1.275v. All power saving features are enabled. When the processor is idling, the frequency steps down 2.4 ghz but the voltage stays at an indicated 1.264v on CPU-Z whether its idling or at 100&#37; load. If I set to auto, the voltage steps down at idle but when under load, the voltage goes way over what this CPU needs to run 100% stable ie. <1.35v and temps skyrocket.

I also have an overclocked 2600k on an ASUS P8Z68 Deluxe. I have this set to offset and ends up around 1.33v under 100% load but steps down to .988v when idle, frequency also lowers to 1.6 ghz.

Is there any way to get the i7 920 to step down the voltage as well or is the new offset feature just something that the new mobos have that wasnt on the 1366 mobos? The bios is the latest one but this has happened on every bios release for the P6T Deluxe v2. Its not really a big issue but just curious.

Thanks

 

[qliveur]

My Gigabyte GA-X58a-UD3R has a BIOS setting called "dynamic vcore" or somesuch that basically does what you're describing. Voltage goes down to 1.024 at idle from 1.296 at load with this setting turned on.

Does your BIOS have anything like that?

 

[WaitingForNehalem]

My motherboard has voltage offset. Try updating to the latest BIOS.

 

[qliveur]

I take it that voltage offset and dynamic vcore are the same thing?

 

[d4a2n0k]

Already have the latest BIOS and definitely no offset option. Its either auto or you plug a number is manually.

No dynamic vcore or anything like that. I have pretty much tried every option in the BIOS but with no luck.

 

[d4a2n0k]

Anybody else have any ideas? Theres gotta be a ton of people using this mobo.

 

[Makaveli]

Anybody else have any ideas? Theres gotta be a ton of people using this mobo.

Will check when I get home and let you know.

 

[tweakboy]

The offset is a neat feature. Or else you would offset in a temp app.

 

[john3850]

Your i7 920 is turbo boost tech. 1
Your 2600k is turbo boost technology 2.0.
I am using 1.328v in offsets to be stable at 4200mhz on my 930.
With all the power saving things on I never saw more then a 2c drop in temp so I disabled them.
The first turbo boost tech never played nice with all the power saving features enabled.

 

[Makaveli]

Your i7 920 is turbo boost tech. 1
Your 2600k is turbo boost technology 2.0.
I am using 1.328v in offsets to be stable at 4200mhz on my 930.
With all the power saving things on I never saw more then a 2c drop in temp so I disabled them.
The first turbo boost tech never played nice with all the power saving features enabled.

I believe the idea around speedstep etc was to reduce power usage more so than temp. And yes I know there is a relationship between the two.

Just because you are only seeing a 2c drop shouldn't be the reason you are dropping it. You should be focusing on your Idle Power draw!

 

[podspi]

I believe the idea around speedstep etc was to reduce power usage more so than temp. And yes I know there is a relationship between the two.

Just because you are only seeing a 2c drop shouldn't be the reason you are dropping it. You should be focusing on your Idle Power draw!

Yes, since (in general) as temps go down, so do fans, etc.

 

[john3850]

I believe the idea around speedstep etc was to reduce power usage more so than temp. And yes I know there is a relationship between the two.

Just because you are only seeing a 2c drop shouldn't be the reason you are dropping it. You should be focusing on your Idle Power draw!

I got a tower on each side of the desk were I sit.
My 930 idles around 37c it just throws off a lot heat from a radiator which I cant deal with this last hot summer.
So I tried speed steep it made no difference so I moved the pc closer to the ac.
On my 930 I could never get the vcore to drop enough to justify using speed steep.

 

[Makaveli]

I got a tower on each side of the desk were I sit.
My 930 idles around 37c it just throws off a lot heat from a radiator which I cant deal with this last hot summer.
So I tried speed steep it made no difference so I moved the pc closer to the ac.
On my 930 I could never get the vcore to drop enough to justify using speed steep.

I'm not sure you understood the point of my post!

Those settings in the bios have a greater affect on your Power draw than on temps. The only thing you can do to get much lower temp would be to improve your cooling.

 

[john3850]

I'm not sure you understood the point of my post!

Those settings in the bios have a greater affect on your Power draw than on temps. The only thing you can do to get much lower temp would be to improve your cooling.

Thanks for 2nd post and yes I missed what you typed in the first.
Speedstep etc.has little effect on my temps as I found out over the summer.
My pump and wb are good but the raddage needs to be increased for better temps.