Hello zhangliren ,
Thank you for contacting the Intel Embedded community.
In order to better understand your question, could you please give us all the information (such the part number, and other details that you consider important) of the intel device related to this consultation?
Thanks in advance for your help.
Thanks for your clarification.
Please let us paraphrase our previous request.
Could you please give us the part number of the Intel processor related to your original request? Because we want to give you the proper information to your device.
Thanks again for your help to solve this situation.
Thanks for your update.
It is important to let you know that the part number related to your consultation is out of our scope of support because it is unrelated to the Intel Embedded products. You can confirm this information in the Embedded Options row of the http://ark.intel.com/products/53450/Intel-Core-i5-2430M-Processor-3M-Cache-up-to-3_00-GHz Intel® Core™ i5-2430M Processor (3M Cache, up to 3.00 GHz) Specifications website.
Due to this fact, your consultations related to this device should be addressed to the https://communities.intel.com/community/tech/processors Intel Processors Forum Community .
However, please review the https://software.intel.com/en-us/forums/software-tuning-performance-optimization-platform-monitoring/topic/488785 Voltage levels at different frequency levels on Sandy bridge processor forum and the information stated in Table 7-5, on pages 80 and 81 of the http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/2nd-gen-core-desktop-vol-1-datasheet.pdf 2nd Generation Intel® Core™ Processor Family Desktop, Intel® Pentium® Processor Family Desktop, and Intel® Celeron® Processor Family Desktop Datasheet, Volume 1.
We hope that this information may help you.