![]() On its official product page, my CPU has the following features listed: 1: Added CoreFreq output to last section.Unless otherwise noted, all original figures and tables are from the datasheet. Intel(R) 64 and IA-32 Architectures Software Developer’s Manual.Sofware Impact to Platform Energy-Efficiency (Intel White Paper).Intel(R) Xeon Processor E3–1245 v5 Product Specification.Intel(R) Xeon Processor E3–1200 v5 Product Family Datasheets.The main references used in this post are: to the processor family) and I am using an Intel® Xeon® E3-1245 v5 3.50GHz, this is a Xeon E3–1200 v5 series (formerly Skylake) processor (model number 0x5e). ![]() The general information in this post is applicable to all modern CPUs but the details can be very specific to the individual CPU (esp. I was planning to include a few real-world examples from Linux, but the post was getting longer and taking even more time to finish, so I will do that in another post. If you know about C-states and P-states and how CPU enters to and exits from these states, probably there is nothing new in this post for you. The power management topic covers much more than this, including the RAM, GPU etc., but I am going to tell you only about the CPU side of the story in this post. So what is the point of keeping the whole CPU powered on at its full capacity ? This is the point of CPU power management. ![]() As almost none of us are doing a 24x7 calculation employing all the resources of the CPU continuously, it is most of the time not operating in its designed maximum. ![]() The processor/CPU is designed to operate forever under a specific load. ![]() How does CPU save power ? You will learn all the basics about the CPU power management in this post. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |