CPU temperature is at high stage when it’s operating, you have to take care of the temperature to extend their life. Taking care to cool CPU is by, using blower to clean every component of the motherboard and also CPU once in a six month’s, for that you have to open the cabinet.
For the experienced user who know about the computer assembly and the other details about the hardware, have to remove the heatsink from the CPU and clean it, as it have more dust then the other components. You can also apply a thermal paste; there are some Brands for it, like Cooler Master, Arctic Silver and Arctic Cooling. Which help’s to greatly reduce the operating temperatures.