Is your computer slow? Well there might be many reasons for that but are you sure it is not the CPU which is the reason behind?
You can ensure that the CPU frequency is really the same as claimed by the manufacturer by this small tool called CpuFrequenz. The tool can accurately identify your CPU frequency so that you can make out what was claimed and what is actually given by the CPU.
Though you can also check the frequency in the BIOS but entering the BIOS mode is irritating for many people, so this is where CpuFrequenz come useful.