In an article about extending battery life, Dennis O’Reilly mentions the RightMark CPU Clock utility he uses. Not only does it show information about your CPU, but it also lets you control several different power settings.
RightMark CPU Clock Utility (RMClock) is a small GUI application designed for real-time CPU frequency, throttling and load level monitoring and on-the-fly adjustment of the CPU performance level on supported CPU models via processor’s power management model-specific registers (MSRs). In automatic management mode it continuously monitors the CPU usage level and dynamically adjusts the CPU frequency, throttle and/or voltage level as needed, realizing the “Performance on Demand” concept.
I downloaded the RAR package, extracted it and ran the program (it appears that there is nothing to install). If you like to see the basic information about your CPU and other hardware, along with those power settings I mentioned, then check it out.