Windows 7: Trying to fine tune power options for cpu utilization...

Recently I've been trying to fine tune my desktop power options so that my cpu multiplier will stay low till cpu demand is 25% or more. I noticed by setting the Power plan to Balanced that my cpu (quad Q6600) multiplier will stay at x6 (1.6GHZ) when idle but once any cpu load of 10% or more it quickly increases to x9 (2.4GHZ). If I instead select Power Saving for my plan the multiplier stays at x6 until cpu load is around 50% or so then it will increase to x9.

Im trying to find a middle ground and modifying the processor power management settings do not adjust when the cpu multiplier kicks in. Is there any advanced features using powercfg.exe that would allow me to set the multipler to kick in when cpu load is around 25%?

thanks