AMDOverdriveCtrl : This tool let's you control the frequency and fan settings of your AMD/ATI video card. ( http://sourceforge.net/projects/amdovdrvctrl/ )
corectrl : Core control application. ( https://gitlab.com/corectrl/corectrl )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ROKO__
For Paludis use this rsync : rsync://gentoo.zugaina.org/ROKO__-portage
If you have a problem : ycarus(-at-)zugaina.org