GPUs are responsible for doing the heavy lifting for games, and they produce a lot of heat in the process. Just like central processing units, GPUs need to have good thermal paste to keep them cool and running optimally.
While high quality thermal paste should last a long time, it’s not inconceivable that you would need to replace it sooner rather than later, especially if your rig is older. In such cases, it’s a good idea to open the card and clean the old paste off before reapplying.
To do this, remove the card from your PCB (and unplug any cable fans that might be connected to it). It’s also a good idea to take this opportunity to gently clean the back plate and the heatsink of any dust.
You can use a lint-free cloth, paper towel, or tissue to do this; just be sure that you have enough isopropyl alcohol on your wipes/cloth/towels to completely remove all the existing thermal paste from the chip and the heatsink. If you do not clean the old paste properly, you run the risk of contaminating the new paste and potentially causing problems for your graphics card in the future.
When applying the new thermal paste, you want to make sure that you have the right amount on the chip (for example, about the size of two rice grains). This will ensure that when you put the heatsink over it, the paste will get distributed evenly and not form a thick layer. GPU thermal paste