Phoronix: Dynamic Clocks For Radeon R500+

When it comes to ATI open-source power management, so far AMD's open-source kindness has just yielded a list of registers but no proper documentation or how PowerPlay exactly works. However, AMD's Alex Deucher has just committed "Dynamic Clocks" support for the Radeon R500 and R600 graphics cards...

http://www.phoronix.com/vr.php?view=NjQxNw