When it happens performance is greatly reduced in order for the CPU or GPU to cool. High temperatures will cause your GPU or CPU to throttle. Listed below are a few potential problems of high temperatures: High temperatures can cause a lot of problems if you leave them unchecked. How Hot Is Too Hot? Optimum CPU & GPU TemperaturesĬPUs and GPUs can withstand high temperatures but not for too long. Here’s how to monitor your CPU and GPU temperature in Windows. The first step to solving this problem is to find out how hot the CPU or GPU gets. High CPU and GPU temperatures can cause a lot of problems for your laptop or PC.