What specific driver and linux tools do you use to throttle your CPU?
Also throttling often produces the opposite result in terms of extended battery life as it likely takes more time in the higher states to do the same amount of work whereas running at a faster clock speed, the work is completed faster and the CPU returns to a lower less energy using state quicker and resides there more of the time.
I would be interested to hear your results. Have you done any tests comparing a throttled versus throttled system with the tools you are using?
It seems that KDE spend 100% of the development time rounding corners and 0% fixing the multitude of crippling crashes and bugs that plague the software making it unusable for daily computing.
I don't think this organisation has its priorities straight.