From http://grano.la/software/about.php ... Granola intelligently manages power usage on x86 servers, laptops, and PCs running Linux and Microsoft Windows. Granola automatically optimizes machines to save energy without slowing them down or turning them off. The Granola Power Management Daemon matches the processor's speed (and energy consumption) to the system load on the fly. Granola will lower your energy use by 10-35% even when your systems are running at full capacity, and track the energy saved to estimate your cost savings and carbon emission reductions. See also: http://grano.la/software/how_it_works.php http://grano.la/help/?download Reproducible: Always Steps to Reproduce: