A Guide to Re-Pasting Your CPU with Fresh Thermal Paste

Central processing units (CPUs) are the brains of your computer. They crunch numbers, execute commands and keep things running. 

This processing power can create heat. Heat that, if it is not controlled, could lead to problems with performance and hardware. Thermal paste can be a key component to keeping your processor cool.

Fresh Thermal Paste

As thermal paste ages, it can become less effective at transferring heat. We'll show you how to reapply thermal paste, which will ensure that your hardware is maintained and performs optimally.


Thermal Paste: Understanding the Uses

We'll first explain what thermal compound is, and why it's so important. Thermal compound is another name for thermal paste. This heat-conductive substance can be applied to the surface of the CPU or its cooler or heat sink. 

Its main purpose is to cover microscopic imperfections on the surfaces of CPU and heat sink to ensure maximum contact and efficiency in heat transfer. 

Over time thermal paste will dry, harden or degrade. This reduces its effectiveness, and requires replacement.


There are signs to replace thermal paste

Thermal paste must be reapplied at the right time to ensure optimal CPU performance. This will also prevent excessive heat buildup. The following are some signs it is time to change the thermal paste:

  • Increased CPU temperature under normal workload.
  • As the cooling system is forced to work harder, it will produce more noise.
  • Thermal paste cracking or drying out can be seen when you inspect the CPU.
  • The last time thermal paste was applied, it's been several years.


Preparing for Repasting

Prepare your workspace and gather all the required tools before you start the repasting procedure. You'll need:

  • Use isopropyl ethanol (minimum 90%) for cleaning and non-linting cloths.
  • Thermal paste of high quality (non-conductive).
  • The CPU cooler can be removed with a screwdriver.
  • Use a thermal paste spreader or tool to apply the paste.


Thermal Paste Removal

Cleaning the old thermal tape properly is essential for optimal heat transfer when using the new application. The steps are:

  • Connect all cables to your computer before you shut it down.
  • Find the CPU cooler by opening up the computer.
  • To expose the CPU, carefully remove the cooling fan with the screwdriver.
  • Wipe away old thermal paste using isopropyl Alcohol and a cloth free of lint. To remove all residue, ensure thorough cleaning.


How to Apply the New Thermal Paste

After removing the thermal paste, apply a new layer. Here's how:

  • Use a tiny amount of thermal compound to cover the CPU.
  • To spread paste uniformly across the CPU surface, use a thermal paste tool or the edge on a card made of plastic. Apply a thin uniform layer.
  • Replace the CPU cooler carefully and firmly.
  • Reconnect the cables, and then close your computer.


Testing and Monitoring

After you have repasted the CPU it is important that you monitor both its performance and temperature to make sure everything functions correctly. 

Track CPU temperatures and compare to values from before the paste. Also, pay attention to any strange noises and any other unusual behavior which may be indicative of cooling problems.


You can also read our conclusion

Applying thermal paste on your CPU can be a quick and easy way to keep it cool, while preventing overheating. Follow the instructions in this guide, and pay attention to any signs of degrading performance. This will ensure your CPU stays cool and effective for years. Avoid waiting until it is too late to take proactive steps in order to maintain your hardware.


Frequently Asked Questions

1) Use any thermal paste on my CPU?

Although there are many different thermal pastes available, you should choose one that is non-conductive and specifically designed to be used with CPUs. The use of conductive thermal pastes may short-circuit the CPU, or even other components, when they are in contact with certain sensitive areas.

2) How often do I need to reapply thermal compound on my CPU?

Thermal paste is generally reapplied between 1-2 years, depending upon usage and environmental conditions. You may need to change the thermal paste earlier if there are signs that it is no longer performing well, such as higher temperatures.
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