I'm trying a full couple of days running JD for CPU control after uninstalling setCPU.
I do see three sliders for control. One control is the min speed (250), the other two controls the max and the current settings are displayed like this:
Max CPU frequency 800/1000, min 250 mhz
For the max speed sliders, the middle slider moves and the 800 goes up or down and the last slider makes the 1000 go up or down.