Searching for Linux Speedstep Support information? Find all needed info by using official links provided below.
https://www.intel.com/content/www/us/en/support/articles/000005723/processors.html
Microsoft Windows XP SP2 and all versions of Windows 7 include native support for Intel Enhanced Intel SpeedStep Technology. With Mac OS* X 10.4., Enhanced Intel SpeedStep Technology is built into the kernel and is already enabled. It cannot be controlled in the System Preference through Energy Saver. Linux* support is available.
https://en.wikipedia.org/wiki/SpeedStep
The SpeedStep settings for power schemes, either built-in or custom, cannot be modified from the control panel's GUI, but can be modified using the POWERCFG.EXE command-line utility. [9] The Linux kernel has a subsystem, tunable by power-scheme and command line, devoted to the control of the operating frequency and voltage of a CPU.Design firm: Intel
https://www.intel.com/content/www/us/en/support/articles/000007073/processors.html
Oct 18, 2019 · An OS must support Enhanced Intel SpeedStep Technology. Current supporting operating systems include: Microsoft Windows Vista*, Microsoft Windows XP SP2*, and Microsoft Windows 7*. Linux* support is also available. Contact your OS vendor for more information. Software/Drivers: No specific software or driver updates are currently required.
https://askubuntu.com/questions/590529/ubuntu-is-very-slow-when-intel-speedstep-is-enabled-cpu-is-not-used-in-full-spe
I have a Dell notebook with i7 processor and Ubuntu 14.10. When i disable SpeedStep in my BIOS my computer is very fast but the fan runs very often and the battery gets empty fast. When I activate SpeedStep, then Ubuntu gets very slow. I have tried switching the governor to performance with no effect. This is what cpufreq-info shows for all 7 CPUs:
https://github.com/torvalds/linux/blob/master/drivers/cpufreq/speedstep-lib.c
Contribute to torvalds/linux development by creating an account on GitHub. Linux kernel source tree. Contribute to torvalds/linux development by creating an account on GitHub. ... * support speedstep. * Celerons with CPUID 0x0F29 may have either * ebx=0x8 or 0xf -- 25130917.pdf doesn't say anything
https://www.phoronix.com/scan.php?page=article&item=397&num=1
This vast operating system support without the need for a special software configuration was due to SpeedStep originally being controlled by toggling the GHI# pin. Intel's direct competition to SpeedStep Technology is AMD's Cool 'n' Quiet, which is a fork of their original PowerNow design.
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