A New Open-Source Tool To Change Intel GPU Frequencies
Written by Michael Larabel in Intel on 12 January 2015 at 12:13 AM EST. 12 Comments
INTEL --
Ben Widawsky of Intel's Open-Source Technology Center rolled out a new experimental tool aptly called intel_frequency for manipulating the Intel GPU frequency under Linux.

The clock frequency for Intel HD Graphics parts could already be forced through the Linux kernel's sysfs interface but in now making it easier to grasp, Ben has whipped up the intel_frequency tool that's more end-user friendly.

The intel_frequency tool supports reading current/minimum/maximum GPU frequencies, setting the different frequency levels, and maxing out the GPU frequency statically. This tool doesn't expose any GPU overclocking or any other functionality that technically wasn't already possible via sysfs magic.

The intel_frequency tool is intended for those wishing to force/set frequencies for performance testing / benchmarking, checking for stability issues, and debugging problems.

This tool hasn't yet been added to the Intel GPU Tools package but can be found via patch form on the Intel mailing list.
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