undervolt 0.1

Undervolt Intel CPUs under Linux

*Warning!*

*This program is untested (apart from by myself) and it may damage your hardware! Use at your own risk.*

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undervolt
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*undervolt* is a program for undervolting Intel CPUs under Linux. It works in a similar manner to the Windows program *ThrottleStop* (i.e, `MSR 0x150`). You can apply a fixed voltage offset to one of 5 voltage planes.

For more information, read `here <https://github.com/mihic/linux-intel-undervolt>`_
.

Installing
----------

From PyPi::

$ pip install undervolt

From source::

$ git clone https://github.com/georgewhewell/undervolt.git

Examples
--------

Apply -100mV offset to CPU Core and Cache::

undervolt --core -100 --cache -100

Apply -75mV offset to GPU, -100mV to all other planes::

undervolt --gpu -75 --core -100 --cache -100 --uncore -100 --analogio -100

Usage
-----

.. code-block:: bash

$ undervolt -h
usage: undervolt [-h] [-v] [-f] [--core CORE] [--gpu GPU] [--cache CACHE]
[--uncore UNCORE] [--analogio ANALOGIO]
[--digitalio DIGITALIO]
optional arguments:
-h, --help show this help message and exit
-v, --verbose print debug info
-f, --force allow setting positive offsets
--core CORE offset (mV)
--gpu GPU offset (mV)
--cache CACHE offset (mV)
--uncore UNCORE offset (mV)
--analogio ANALOGIO offset (mV)
--digitalio DIGITALIO offset (mV)

Credit
------
This project is trivial wrapper around the work of others from the following resources:

- https://github.com/mihic/linux-intel-undervolt
- http://forum.notebookreview.com/threads/undervolting-e-g-skylake-in-linux.807953
- https://forums.anandtech.com/threads/what-controls-turbo-core-in-xeons.2496647

Many thanks to all who contributed.