SpeedStep vs Turbo Mode vs C-STATE vs C1E

[jemm]

I am seeking an answer with no Overclocking in mind.

Enhanced Intel SpeedStep® Technology http://www.intel.com/cd/channel/reseller/asmo-na/eng/203838.htm/

Intel® Turbo Boost Technology http://www.intel.com/content/www/us/en/architecture-and-technology/turbo-boost/turbo-boost-technology.html

C-state architecture http://www.intel.com/technology/itj/2006/volume10issue02/art03_power_and_thermal_management/p03_power_management.htm

How SpeedStep and Turbo Mode works in relation to C1E and C-STATE? What should be enabled and what should not, and why?

 

[jay_nar2012]

So your questions have been answered?

 

[jemm]

Yeap! Thank you!

 

[jemm]

Best answer selected by jemm.

 

[k1114]

I am not confusing anything here.

My browser (Firefox) opens any pdf.file without a problem. It was just one link it didn´t work.

When any core is in C0 or C1 state they are considered by the system as Active Cores. Sorry but C-State has indeed effect on turbo. See below from the link above.

Intel® Turbo Boost technology provides the Core i7 the capability of maximizing core frequency while ensuring that the processor does not go above the upper-limits of
temperature, power, and current. When lower power-consuming applications execute on a subset of active cores (cores in core C0 or core C1) with inactive cores (cores in core C3 or core C6) present in the package, the applications may take advantage of the additional power headroom provided by the inactive cores in the form of increased core frequency (http://impact.asu.edu/cse591sp11/Nahelempm.pdf).

What this is saying is that the actice cores go to an even higher speed because there are inactive cores. If you understand how turbo works; it is dependent on how many cores are being used. For a i7-2600k the highest turbo is 3.8ghz with 1 core, 3.7 for 2 cores, 3.6 for 3 cores and 3.5 for 1 core. C-states does not affect turbo, rather the cores can be in an idle state while the others are in c0 state (full speed state). This is what I meant in pdfs confusing people; being confused by the terminology in the pdf as most people are not technically knowledgeable to understand what is being said.