could be a few things really,
1: your procesor is getting for some reason to hot and intel securety steps in and underclcok the processor to reduce heat
solution/how to find out:
download realtemp and see what tempratures you get and see what happens with the clock speds when a certain temp has been reached
2 like mentioned above, there could be speedstep involved,
solution: disable ANY C1 and Co speedstep settings there is in the bios to prevent this.
3, make sure you have enough voltage going through the processor, there could be a setting in the bios (auto is the most common isue here, put it on the stock voltages (you can look this up on the specs of your processor, google it
) and see if the problem still persist
report back when you tried these options, i will see what options we can go through next
@solidus, could you please not post anymore, you make my head hurt..