Hm , i just checked my Bio's and theres nothing like that anywhere?
Either way , i cleared my cmos by removing my battery quickly...
I checked my cpu , and well it went up to 9x... for about 20 seconds , then it went back , and once again its not going to 9x even on 100% load..
I hate to keep pressing here, especially since you seem to believe heat is not the problem, but that is the exact way an overheating CPU will react.
If your board is in an OEM build, you may not have access to the advanced features.
As soon as it warms up a little too much, the thermal protection will start kicking in to keep it from getting any warmer.
I would still at least try removing the heatsink, cleaning, remounting with new thermal paste, make sure your fan is working properly etc.