The normal temperature range for a CPU varies depending on the type of processor and the tasks being performed. Generally, the normal idle temperature should be around 35-45°C (95-113°F), and the temperature range for most CPUs under heavy load should not exceed 70-80°C (or 158-176°F). However, some CPUs may run hotter when they're in gaming laptops or small-form-factor (SFF) computers. Anything under 95°C is considered safe, but it is recommended to keep it below 85°C for long-term use. Sustained CPU temps above 80°C (176°F) can do long-term damage to the CPU and its silicon, and if the CPU goes higher than 90°C (194°F) for several hours, it is likely to reduce the lifespan of the processor. It is important to periodically monitor the CPU temperature under load to ensure it's adequately cooled.