LACT is a graphical tool for AMD Radeon information reporting, GPU overclocking, fan control, power/thermal monitoring, and additional power state configurations.
v0.5.3 adds support for displaying the current graphics clock “current_gfxclk”, information around GPU throttling is now reported, improved fan control for older GPUs, improved fan curve point adjustments, many bug fixes, and other enhancements.
I’ve had pretty good luck with radeon-profile. I’ll have to give this one a go