How to remove and apply thermal paste on a CPU

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In the realm of computer hardware, thermal paste plays a pivotal role in maintaining the proper temperature of the Central Processing Unit (CPU). Its primary function is to optimize heat transfer from the CPU to the cooler by filling in microscopic air gaps. However, this paste can degrade over time, resulting in less effective cooling. Thus knowing how to properly clean, remove and reapply thermal paste is a skill essential to the longevity and performance of your CPU. We’ll walk you through these two crucial processes step-by-step.

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To clean the thermal paste off a CPU, unmount the cooler and gently wipe off the old paste using a soft cloth or a coffee filter soaked in high-percentage isopropyl alcohol. To apply the new paste, put a pea-sized amount on the center of the CPU's surface, then reattach the cooler, which will spread the paste evenly.

KEY SECTIONS

Here is a step-by-step guide on how to safely remove the thermal paste from a CPU:

Here are the steps to properly apply new thermal paste to a CPU:

Remember, the goal of applying thermal paste is to facilitate better heat conduction, and using the right amount is key. Too little, and you won't cover the entire CPU; too much, and it can overflow and potentially cause damage.

Yes, over time, the thermal paste can degrade, reducing its effectiveness. Therefore, it's advisable to clean off the old paste and apply new every few years or whenever you’re replacing your CPU cooler.

Yes, you can use 70% isopropyl alcohol to clean thermal paste off a CPU, but it's not ideal. Higher concentrations (90% or more) evaporate faster and do a better job removing thermal paste.

Hardened thermal paste can be carefully scraped off with a plastic tool such as a credit card. Then, use a soft cloth or coffee filter moistened with high-percentage isopropyl alcohol to remove any remaining residue.

Yes, 90% isopropyl alcohol is ideal for removing thermal paste. It breaks down the paste and evaporates quickly, leaving no residue.

Yes, high-percentage isopropyl alcohol is safe and effective for removing thermal paste. It evaporates quickly and doesn't leave a residue. However, it's essential to let the CPU dry completely before applying new paste or turning on your computer.