How to add temperature tab to task manager?

I know this is an Windows 7 post but it was a top result in my Windows 10 Google search, so I thought you might like to know this:

Windows 10 is going to show GPU temperature. "This will be part of Windows 10’s 20H1 update, which will become stable sometime around May 2020"

https://www.howtogeek.com/437378/windows-10-will-show-gpu-temperature-in-the-task-manager/

I use Piriform's Speccy - Gives all temperatures, seems to have sensible built in warning levels. It was the first time I knew my external 640GB USB drive was overheating. https://www.piriform.com/speccy

You can use Argus Monitor. It's a hardware temperature monitoring tool. It measures CPU, Hard Disk and GPU Temperature and also monitors the Hard Disk using S.M.A.R.T and displays processor fan speed.

This software allows the user to mark the threshold value for the hardware's temperature. You can select the task to perform when the threshold value is reached.

Try HardWare Monitor:

HWMonitor is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, fans speed. The program handles the most common sensor chips, like ITE® IT87 series, most Winbond® ICs, and others. In addition, it can read modern CPUs on-die core thermal sensors, as well has hard drives temperature via S.M.A.R.T, and video card GPU temperature.

If you wish to see only the CPU temperature, and are not concerned about anything else, Core Temp is a more compact, smaller foot print program:

The uniqueness of it is that it shows the temperature of each individual core in each processor in your system! You can see in real time how the CPU temperature varies when you load your CPU. It's also completely motherboard independent.