https://bugs.freedesktop.org/show_bug.cgi?id=73338

--- Comment #23 from Zermond zermond@gmail.com --- I have a similar problem with Radeon7870HD https://bugs.freedesktop.org/show_bug.cgi?id=83453

But there are some differences in the windows ... Catalyst says that the cooler is spinning at a rate of 40% - it is quiet, but Linuxs on hearing much more ...