How to find different Intel processor's P-states?

[idata]

Different p-states will let processor core work at different frequency level and voltage level. It's enabled by Intel Enhanced Speedstep technology.

I want to do some power management research. However, different processor's p-states capability is very different (for example, some processors will only have 2 p-states while others will have more). I know how to check it on the machine. But does anyone know if there is a place showing all the information for all Intel processors? So I can figure out which processor I am going to buy. I can not find such information on Intel's website.

[Silvia_L_Intel1 · Accepted solution]

Hi Hao,

You will be able to find information about all Intel Processor on http://ark.intel.com ark.intel.com

On the following PDF, on pag 47 is some information about power management on Ivy Brigde processors.

http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/3rd-gen-core-desktop-vol-1-datasheet.pdf http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/3rd-gen-core-desktop-vol-1-datasheet.pdf

regards,

[idata]

Hi Sylvia,

Thanks for you reply. Actually I have already checked the pages you mentioned. Unfortunately, there are no such information I need. I know they support Enhanced Speedstep technology. But what I need to know is how many frequency levels each processor supports.:<

[Silvia_L_Intel1]

Let me try to find some information for you. I will keep you post.

[idata]

Hi Sylvia,

Thanks a lot.

I have done a lot of search.Actually I think such information may not be maintained by the company. It's not worthy.

The only possibility is that in some research papers, such information might be mentioned as they use different processors for their evaluation. And another reference I found is this :

http://impact.asu.edu/cse591sp11/DynamicPMQuantativeApproach.pdf http://impact.asu.edu/cse591sp11/DynamicPMQuantativeApproach.pdf

In it there is an AMD six core Opterons processor that really supports quite some frequency levels. What I need is an CPU with at least 4 cores and better more frequency levels