Dolphing Kujog,
Which processor do you have?
Running multiple temperature monitoring utilities simultaneously is not such a good idea, as they can interfere with one another.
Real Temp was developed specifically for Intel processors.
My 1st choice is Real Temp, 2nd Core temp. SpeedFan usually needs to be calibrated by using Real Temp or Core Temp.
Real Temp will also allow you to test your processor's DTS (Digital Thermal Sensors) for accuracy.
Core Temp shows you how much power (Watts) your processor is using.
Regardless, idle is not the best way to look at your temperatures. Load temperatures are critical. There's a proper way to test your rig's processor temperatures, and get yourself up to speed on this topic.
Please...