As the title says, my EP121 will constantly throttle itself to about a third of it's max speed. Using CoreTemp I see that the CPU stays at speed a x5 multiplier of it's base frequency (664.87 MHz = 132.97 x 5). This remains the case regardless of what Windows power profile I choose, or minimum CPU % I set in the power profile settings. Plugging/unplugging from AC power does not seem to change this behavior. Running CPU intensive applications like Civ5 (or other games) does not cause the CPU to scale up. I've tried using CPUgenie to force the throttle to a certain level, but for some reason I can't enable the throttling feature inside the application. The only time I have noticed that the CPU clocks up reliably is right after waking from sleep, but that only lasts about 10-15 seconds before the CPU clocks down again. Can anyone tell me how to control the CPU clock speed? Any assistance would be greatly appreciated.