Surprisingly, if you do not have problems with your system's performance then SpeedFan is excellent.
You can know the temperature of micro, hd, fan speed and CPU charge. Now you are asleep without thinking
And that's not the main function of Speedfan, because it gives you information and ... it does not allow you to control the speed of your computer.
It's very easy to use because it detects all the information yourself, you do not have to do anything it will run and all the information you need
And if you reduce it, you'll see the most important information in your system tray.