You can use it to get to know your system a bit better and find out the actual performance of your computer. Although most computers today have pretty powerful processors, it's difficult to know what exactly is hidden inside that case.
RealSpeed can also help you detect performance issues so you can wrangle a solution before it's too late.
The application barely uses any memory and as we mentioned the monitoring is done in real time. So if you're curious about how powerful your computer's CPU really is, try it out – there's nothing to lose.