Never heard about Cyclos before, so had to look them up.

http://www.cyclos-semi.com/news/firs...mentation.html

AMD’s 4+ GHz x86-64 core code-named “Piledriver” employs resonant clocking to reduce clock distribution power up to 24% while maintaining the low clock-skew target required by high-performance processors.
Now I have no idea how much power the clock distribution part in BD use, but everything counts I guess