6 Best Thermal Pastes for CPU and GPU


  • What’s the best thermal paste? Thermal paste is a conductive material that keeps the CPU and GPU of your computer cool. A good thermal paste will help to transfer heat away from the processor, so it won’t overheat and slow down.
  • Our thermal pastes are all high-quality products that will keep your computer cool and stable. Whether you are a budget-minded gamer or a high-end overclocker, you’ll find the right thermal paste here.
  • So read on to learn more about the 6 best thermal pastes in 2023!
Best Thermal Paste
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Thermal paste is an essential component for any PC enthusiast who wants to keep their system running cool and efficiently. It helps to transfer heat away from the CPU or GPU and into the heatsink, which helps to prevent overheating and throttling.


In simple terms, a thermal paste fills the gap between the CPU and its cooler. This transfers heat away from the processor and into the heatsink. Most coolers these days come with pre-applied thermal paste, but it’s always a good idea to keep a high-quality thermal paste on hand for re-application whenever your PC needs cleaning.

But finding the best thermal paste for your CPU or GPU can be a tedious task because there are so many options available.

That’s why we conducted extensive research and compiled the list of six best thermal pastes in 2023 to help you get the best cooling for your PC. We chose these options based on their thermal conductivity, price, and ease of installation. 

So without further ado, let’s dive into our top picks!

What is a Thermal Paste, and Why People Use Them?

If you aren’t a performance-heavy user who uses a custom-built PC, chances are you have never heard about thermal paste. Well, it is a soft paste-like compound that is thermally conductive.

It is placed between the processor and the heat sink to eliminate all the air gaps between them. The paste itself helps a lot in keeping the CPU or GPU temperatures low as it conducts the heat from the processor to the heat sink.

As a result, the CPU is generally cooler, and every one of you knows how important it is to keep your CPU temperatures low.

Not only does it boost the performance capabilities, but it is low operating temperatures also ensure the longevity of your CPU or GPU.


Now, a lot of processors come with pre-applied thermal paste, but it is nothing compared to the best thermal paste you will find here on the list.

6 Best Thermal Pastes in 2023 (For Both CPU & GPU)

Below are our top six best thermal pastes for your CPU or GPU available today in the market:

Arctic MX-6

ARCTIC MX-6 - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: ARCTIC
  • Electrically conductive: No
  • Operating Temperature: -50°C to 150°C
  • Thermal Conductivity: Unspecified
  • Quantity: 2 to 8g
  • Viscosity: 45000 poise

The Arctic MX-6 is our first choice for the best thermal paste to buy in 2023. With its versatility and Arctic’s reputation for producing high-quality thermal paste products, it is the go-to choice for users looking to buy a new thermal compound. 

This thermal paste is highly effective and versatile. Since it’s metal-free and non-conductive, you can use it safely on various components like CPUs, GPUs, laptops, consoles, and even around reactive materials.


It’s easy to install Arctic’s MX-6 because it’s not electrically conductive.

The viscosity and consistency let you get the maximum benefit out of only a small layer of the paste being applied. Thinner applications enable faster heat transfer, resulting in higher and more consistent temperature drops.

During our own tests, we found that the MX-6 paste performed better than the Thermal Grizzly paste by 6 degrees Celsius. This paste was extremely easy to apply and did not require much cleanup afterward. If you frequently switch coolers, this is a great solution.

In summary, ARCTIC MX-6 ranks among the top-reviewed thermal pastes currently available on the market, and we recommend it as the best one.


Thermal Grizzly Kryonaut

Thermal Grizzly Kryonaut - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: Thermal Grizzly
  • Electrically conductive: No
  • Operating Temperature: -250 °C to 350 °C
  • Thermal Conductivity: 12.5 W/mk
  • Quantity: 1g to 11g

Thermal Grizzly Kryonaut is the runner-up choice. It is widely regarded as one of the best thermal pastes on the market. It has high thermal conductivity, which means it efficiently transfers heat away from your CPU or GPU and maintains an optimal temperature inside your computer.

With its high thermal conductivity rating of 12.5 W/mk, it effectively transfers heat away from your CPU or GPU, ensuring optimal temperatures for your computer.

One of the standout features of Kryonaut is its ease of application. The paste is incredibly smooth and spreads evenly across the component’s surface. Its low viscosity ensures that it spreads out effortlessly without requiring excessive pressure.

In my testing, I found that the Kryonaut paste was very effective at lowering CPU temperatures and improving the overall performance of my PC. Additionally, the paste is very durable, and you won’t have to reapply it frequently because it stays effective for a long time.


To put it simply, if you’re looking for an excellent cooling solution for your computer components, I highly recommend Thermal Grizzly Kryonaut thermal paste. It’s easy to use, works well, and lasts a long time. 

It’s a worthwhile investment for anyone who wants to keep their computer running smoothly and prevent overheating, whether you’re a casual user or a hardcore gamer.

Noctua NT-H1

Noctua NT-H1 - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: Noctua
  • Electrically conductive: No
  • Operating Temperature: -50°C to 110°C
  • Thermal Conductivity: Unspecified
  • Quantity: 3.5g

The Noctua NT-H1 3.5g Pro-Grade Thermal Compound Paste is a highly acclaimed solution for maintaining optimal temperatures in your CPU or GPU. With over 150 awards and recommendations, it stands out from the competition.

While the exact thermal conductivity specification is unspecified, Noctua NT-H1 keeps your CPU or GPU cool even under heavy loads.


NT-H1 is super easy to use. It comes in a syringe with a screw-on cap, so it is easy to dispense the correct amount of paste. This paste is also non-conductive, so there is no risk of short-circuiting if it gets on the motherboard.

Additionally, cleaning the Noctua NT-H1 is a breeze. With a dry paper towel or tissue, you can wipe it off without cleaning alcohol. This convenient feature makes reapplication hassle-free, which is especially useful for frequent upgraders.

This thermal paste is compatible with both air and liquid coolers, making it ideal for DIY systems and all-in-one (AIO) cooling solutions. It offers better thermal performance than stock pastes on AMD Ryzen and Intel Core CPUs, AMD Radeon and Nvidia GeForce GPUs, PS4/PS5, Xbox, and laptops.

In terms of long-term stability, the NT-H1 is outstanding. You can store it for up to 3 years and use it on the CPU for up to 5 years.


In summary, the Noctua NT-H1 is an excellent thermal paste that provides exceptional performance, ease of use, and long-term stability. Both overclockers and enthusiasts will find it a good choice, and it offers good value for money.

Prolimatech Pk-3 Nano Aluminum

Prolimatech Pk-3 - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: Prolimatech
  • Electrically conductive: No
  • Operating Temperature: N/A
  • Thermal Conductivity: 11.2 W/mK
  • Quantity: 5g

Prolimatech PK-3 Nano Aluminum Thermal Compound is a premium product that delivers on its promises. It is a high-quality product that keeps your computer cool. 

This paste provides good stability, making it easy to apply and clean up on all surfaces. It is sufficient for most CPU applications, so you can’t go wrong with this paste.

This thermal paste has nanoparticles embedded in its composition that fill in the minor air gaps between the processor and the heatsink, which makes it work better. The result is improved heat dissipation and better overall performance.


The upgraded PK-3 Nano has a higher viscosity than the PK-2 variant. That means it is thicker rather than softer but still easy to apply. It even comes with an applicator tool for smooth application. It does not conduct electricity, so you don’t have to worry about damaging your computer.

Additionally, the PK-3 Nano doesn’t dry out quickly, which means it will last a long time. This product’s packaging is bright orange, so it’s easy to spot among other products.

The PK-3 Nano thermal compound is available in different sizes. You can get it in quantities up to 30 grams, and the smallest one is 1.5 grams. However, the smaller ones are not always available.

Considering its effectiveness and reliability, the Prolimatech PK-3 Nano Aluminum Thermal Compound is a solid choice for most CPU applications. If you’re looking for something similar but cheaper, you can opt for the PK-2 from the same brand.


Corsair XTM50

Corsair XTM50 - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: Corsair
  • Electrically conductive: No
  • Operating Temperature: N/A
  • Thermal Conductivity: 5.0 W/mK
  • Quantity: 3.5g

Next, the thermal paste in our list comes from the Corsair company. The company sells coolers, memory modules, PC cases, and thermal paste, among other products.

The Corsair XTM50 is a part of Corsair’s impressive range of computer components and is considered one of the best thermal pastes available today. Though the paste is very efficient at cooling, we chose it because it is convenient to use.

The XTM50 comes with an application stencil and spreader, which makes it incredibly easy to use. This means you don’t have to worry about accidentally spilling the paste on your CPU socket or other components. Simply place the stencil on the CPU, apply a suitable amount of paste, and use the spreader to distribute it evenly.

If you prefer, you can also apply the XTM50 using the traditional “Dot method” due to its low viscosity. But the included stencil and spreader are especially helpful for beginners who may not be familiar with the proper way to apply thermal paste. It simplifies the process and ensures optimal performance for your CPU.


The XTM50 is available in a single size, so you don’t have the option to choose a smaller quantity. However, Corsair claims that its ultra-low thermal impedance makes it superior to many other cooling solutions on the market.

Additionally, Corsair sells the XTM30 compound, but it does not include a stencil or spreader, so you’ll have to use traditional methods for applying the paste to the CPU IHS. Both thermal compounds are safe to use as they are made of non-conductive and zero-volatile compounds.

To sum it up, the Corsair XTM50 thermal paste is a must-have for any builder, especially those new to the process. Its exceptional cooling properties and user-friendly application methods make it a top-notch choice for maximizing CPU performance without the fear of mishaps.

Cooler Master MasterGel Pro V2

Cooler Master MasterGel Pro V2 - Best Thermal Pastes for CPU and GPU

Key Specifications

  • Brand: Cooler Master
  • Electrically conductive: No
  • Density: 2.6 g/cm³
  • Thermal Conductivity: 9 W/m.k
  • Quantity: 1.5mL

If you’re a PC user and gamer looking to upgrade your pre-installed paste for enhanced performance, the Cooler Master MasterGel Pro V2 thermal compound may be your fantastic choice. 


Several users have noticed a noticeable improvement after applying it due to its impressive thermal conductivity. With its impressive thermal conductivity rating of 9 W/m.k and a density of 2.6 g/cm³, this updated version of Cooler Master’s flagship thermal paste consistently lowers temperatures, boosting overall performance.

Like other thermal pastes on this list, MasterGel Pro V2 is easy to use. The application process is straightforward, and the paste spreads evenly without any fuss. Furthermore, cleanup is a breeze, saving you valuable time and effort. 

We appreciate that it doesn’t require much paste for optimal results. You only need a little paste, so it’s cost-effective and long-lasting. Also, the thermal compound is slow-drying, so you can keep it for several years without worrying about it deteriorating.

Overall, if you’re looking for a simple and effective way to improve your PC’s cooling capabilities, the MasterGel Pro V2 is a reliable option to consider.


How to Choose the Best Thermal Paste?

If you’re looking for the best thermal paste, take extra care to make sure you get a quality product. Here are some factors to consider when choosing a thermal paste:

Thermal conductivity

Thermal conductivity is one of the most important factors in a thermal paste. It measures how effectively the paste transfers heat from the CPU or GPU to the heat sink. Therefore, you should look for a thermal paste with high thermal conductivity for optimal heat dissipation.

Ease of application

Some thermal pastes are easier to apply than others. If you are not comfortable applying thermal paste, then you may want to choose a paste that is easy to use.

Electrical Conductivity

Ensure that the thermal paste you choose is non-conductive. This is crucial because if the paste comes into contact with electrical components on the CPU or GPU, it could cause short circuits and damage your hardware.



Make sure the thermal paste you choose is compatible with your CPU or GPU. Most thermal pastes are compatible with a wide range of processors and graphics cards, but it’s always good to double-check the manufacturer’s specifications to ensure compatibility.


Some thermal compounds may dry out or lose effectiveness over time, requiring reapplication. Ensure that your thermal paste has a long lifespan and maintains its performance for a long time.


Thermal pastes can range in price from a few dollars to over $20. It is important to find a thermal paste that fits your budget.

Conclusion – Best Thermal Pastes for CPU and GPU

Hopefully, this article has helped you to find the best thermal paste in 2023. Ultimately, what thermal paste is best for you depends on your personal preferences and budget. 


In our opinion, Arctic MX-6 thermal paste is the best overall choice. Most PC builds should use Arctic MX-6 thermal paste to cool their CPUs. It is inexpensive, offers superior thermal conductivity, and is easy to work with. 

There are other excellent thermal pastes out there, which is where our other recommendations come into play. But the Arctic MX-6 is brilliant for cooling high-performance processors like Intel Core i9 and AMD Ryzen Threadripper.

Further Reading:

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