While ideal temperature ranges vary between CPU brands and models, most processors should run between 70 and 90 degrees Celsius. Modern processors should not exceed 95 degrees C.
When a computer's processor overheats, it can cause a myriad of issues, including causing the computer to run slower and randomly shut off or restart. Keeping the computer clean inside can help maintain a cooler CPU, as can ensuring a proper amount of airflow around the computer. Computer fans and thermal paste can also help keep the CPU cooler. A CPU that continuously runs too hot often has a shorter life expectancy.