Our editors independently research and rate the best products. As an Amazon Associate we earn from qualifying purchases made through the links on our site. Learn more

best thermal pastes

The Best Thermal Paste in 2021

Author: Robert Wilson

Electronics & Peripherals Expert

ARCTIC MX-4 - Thermal Compound Paste

 Our Pick
ARCTIC MX-4 - Thermal Compound Paste
27,689 Reviews
ARCTIC MX-4 – Thermal Compound Paste
  • WELL PROVEN QUALITY: The design of our thermal paste…
  • EXCELLENT PERFORMANCE: MX-4 thermal paste is made of carbon…
  • SAFE APPLICATION: The MX-4 is metal-free and non-electrical…
  • HIGH DURABILITY: In contrast to metal and silicon thermal…
  • EASY TO APPLY: With an ideal consistency, the MX-4 is very…

Arctic Silver 5 AS5-3.5G Thermal Paste

Arctic Silver 5 AS5-3.5G Thermal Paste
11,556 Reviews
Arctic Silver 5 AS5-3.5G Thermal Paste
  • 99.9% pure micronized silver
  • Non-electrically conductive
  • Will not separate, run, migrate or bleed
  • Thermal conductance: >350 000W/m2 degreesC (0.001 inch…
  • Easy to apply and remove

Cooler Master High Performance Thermal Paste - (HTK-002-U1)

Cooler Master High Performance Thermal Paste - (HTK-002-U1)
3,084 Reviews
Cooler Master High Performance Thermal Paste – (HTK-002-U1)
  • Suitable for CPU, chipsets on Mainboard, VGA card, etc
  • Easy to use
  • Zif Socket Templates ensure correct applying area with…
  • Produces an even layer when using applicator
  • Wide range of application temperature

Thermalright TF4 Thermal Compound Paste

 Our Pick
Thermalright TF4 Thermal Compound Paste
458 Reviews
Thermalright TF4 Thermal Compound Paste
  • [Better than liquid metal]: composed of carbon…
  • [Safe application]: The TF4 is metal-free and non-electrical…
  • [High durability]: in contrast to metal and silicon thermal…
  • [Easy to apply]: with an ideal consistency, The TF4 is very…
  • [Thermal compound]: Formula, the TF4 guarantees exceptional…

Corsair XTM50 High Performance Thermal Compound Paste

Corsair XTM50 High Performance Thermal Compound Paste
4,884 Reviews
Corsair XTM50 High Performance Thermal Compound Paste
  • Enthusiast CPU Thermal Compound: Premium Zinc Oxide based…
  • Cools your CPU and GPU: install new, or replace existing…
  • Improved CPU cooling: ultra-low thermal impedance lowers CPU…
  • Installation Made easy: An included application stencil and…
  • Filling the gap: xtm50’s low-viscosity allows it to easily…

Noctua NT-H1 3.5g, Pro-Grade Thermal Compound Paste

Noctua NT-H1 3.5g, Pro-Grade Thermal Compound Paste
12,525 Reviews
Noctua NT-H1 3.5g, Pro-Grade Thermal Compound Paste
  • Renowned premium-grade thermal compound for optimal…
  • Easy to apply (no need to spread before heatsink…
  • Not electrically conductive and non-corroding thermal…
  • Trusted Noctua quality with excellent long-term stability:…
  • 3.5g pack for around 3-20 applications (depending on CPU…

Thermal Paste, 5 Pack ThermalCoolFlux(TM)

Thermal Paste, 5 Pack ThermalCoolFlux(TM)
1,506 Reviews
Thermal Paste, 5 Pack ThermalCoolFlux(TM)
  • High Thermal Conductivity: >3.2 W/mK
  • 5-pack of 1.5g Easy-to-Use and Store Syringes
  • Silver polysynthetic thermal paste grease
  • Great for Computer CPU & GPU
  • Get system cooling performance you can trust

Frequently Asked Questions: Thermal Paste

What is a thermal paste?

Until a few years ago, a thermal paste was used exclusively for high-end PCs. Today, the pastes are also part of the basic equipment for standard and average computers. What exactly a thermal paste is and what functions and tasks it fulfills, you will learn in this test and comparison.

Simplified, it can be said that a thermal paste, as it was also found in this test and comparison, is needed and used for cooling or rather for optimizing the cooling process.

When it comes to the question of the right thermal compound, many will initially shy away from the large selection and the chemical and technical composition of a thermal compound. Especially inexperienced users have great difficulties and problems with the selection of an appealing thermal compound.

However, with this detailed and of course objective test and comparison, you will get all the information you need about this product. Thus, the purchase of a thermal paste should not turn out to be a big problem at all.

You can get a thermal paste in different versions and from different manufacturers.

If you are a layman in this field, this test will definitely interest you. You will get many open questions answered. The comparison deals with the points where a thermal paste should be bought, what you should look for when buying and which different types there are. Of course, the individual manufacturers are also discussed in more detail.

If you like to tinker with a computer yourself and possibly want to optimize the performance with a hard drive, you will need the right tools for this work. A thermal paste from the test should also not be missing in the toolbox. Some hardware is unfortunately quickly overwhelmed in a computer and the fact that in the households mostly in computers to find, puts the importance of a thermal paste also in the foreground.

How does thermal paste work?

A thermal paste from the test and comparison actually only has to fulfill one task. The paste should provide for an improvement of the heat transfer between two different objects. The composition of a thermal paste can be very different and results from the mixing behavior of the individual manufacturers.

In this test by independent experts, it was found that many versions have a very special mixture of zinc oxide, silicone oil, graphite, copper and aluminum components. The paste can be applied to the desired objects relatively easily with a little practice, skill and expertise. A thermal paste is used in many applications.

Very often, however, a heat-conducting paste is found in home computers. Computers today mostly work at full speed and if the CPU needs to be improved, a thermal paste is essential. In this comparison and neutral test, you will learn what other applications there are and what points to consider before buying. The functionality of a thermal paste from the test is simple and therefore straightforward.

If it’s about sufficient cooling or heat transfer, this product is a sensible investment. Whether in a computer or in the field of engines, heating or cooling devices, the thermal paste accompanies us in many areas.

The heat conductive pastes are also used in the construction of engines, as briefly mentioned. If a better dissipation of the combustion heat must be ensured with the engines, these pastes are an important component. In the case of a PC, opinions about the perfect application differ greatly.

The test has shown that layer thickness should be kept as low as possible.

However, this comparison and test does not want to deal with the recommended use in more detail or in more detail, because the aim of this test and comparison is to determine the best and highest quality thermal paste.

How much thermal paste do I need to apply?

When applying, you have to be careful not to apply the paste too thinly. However, the layer should also not be too thick. In addition, the paste must always be applied evenly.

How can I remove the thermal paste?

Most products in thermal paste tests can be easily removed with a clean paper towel and some warm water.

Advantages of thermal paste

The advantages of a thermal paste are actually self-evident. The paste is relatively cheap to get and also fulfills many important and valuable tasks. If you want to upgrade a computer yourself or have bought a PC to assemble yourself, you will sooner or later also need a thermal paste and have to handle it.

Even if only the assembly of a GPU cooler on a so-called graphics card is to be carried out, a thermal paste is absolutely necessary.

The following application areas exist:

  • Electronics and electrical engineering
  • Engine construction
  • Cooling and heating devices

The heat conductive paste that can be found in the test as well as comparison, of course, is thus used in many areas and situations in life. You will be surprised, in which devices at home everywhere this paste is. The thermal paste promotes heat conduction and it is a good and indispensable invention today.

If you are interested in a thermal paste from the test, I should look for these products on the Internet and in online stores. However, this should not be an anticipation, because where to buy a thermal paste in the ideal case will be described in more detail in the comparison and objective test.

The exact use of a thermal paste depends on various factors. On the one hand, the manufacturer’s specifications should be considered, and on the other hand, personal preferences must also be taken into account.

However, it is certain after this test that a thermal compound plays an important role especially for computers.

Types of thermal pastes

It wouldn’t be a detailed and thorough test if it didn’t also clarify the question of the different types. In this comparison, you will now find all interesting news, facts and reports about the individual and different types of thermal paste.

At this point, it should also be mentioned that the thermal paste has to be distributed evenly on the individual objects. It is not important which paste it is or rather from which manufacturer, so that a good end result is achieved, the even application of the paste is always to be observed. In colloquial language, thermally conductive pastes are also very often referred to as cooling paste.

As you already know, the paste is not only used for computers. The field of application covers a variety of areas, such as the construction of aircraft engines. Another area of application is also the construction of heating systems. So there is a suitable heat-conducting paste for every field of application.

In this test, however, the experts would like to take a closer look at the cooling pastes for computer construction.

If a paste is desired for the heat exchange of heat sinks and chipsets, then corresponding pastes must be used. Gamers in particular are unfortunately greatly affected by overheating of the computer. It becomes dangerous or alarming when a temperature of 70 degrees Celsius is exceeded.

In order to perform a proper and desired cooling, the choice of a proper thermal paste is crucial. If you choose a cooling paste from this test, you won’t actually have to worry about anything in terms of quality.

The thermal conductivity of a paste depends on its composition. The silicone ingredient already ensures good thermal conductivity. However, many manufacturers still use other ingredients in the production of thermal conductive paste. It is therefore useful and important to take a closer look at the various ingredients.

If a paste also contains iridium, silver or aluminum, you can assume that it is a high-quality thermal compound.

For some time now, there have also been pastes in the form of a liquid metal. It is actually up to you alone to decide which cooling paste from the comparison or test you finally choose. However, with the products from the comparison and product test, you make a good decision.

The pastes were subjected to a very detailed test and had to meet a variety of criteria to make it into the best list. Note, however, that a paste made of liquid metal must not be applied to aluminum. The reaction could have dire consequences.

How are thermal pastes tested?

In this comparison and thermal conductive pastes test, it was the experts’ concern to carry out a very detailed and objective comparison. The selection of heat conductive pastes is surprisingly extensive and therefore various criteria and attributes had to be defined before the test began.

Only with a guideline during the complete comparison, a first-class and also neutral test and product comparison result could be delivered.

The experts in the test round thus had to think about some criteria for the product test before the test. You cannot really imagine how difficult this task was and how much time these considerations took. However, they did manage to decide on the most important attributes.

The following points were considered in the test and comparison of the cooling pastes:

  • the thermal conductivity
  • the service life until renewal
  • the compatibility with other metals
  • the purchase price

In the test, there were of course many more criteria that the test and comparison winner had to meet. You can rely on a very tough and critical test in this comparison.

If a thermal paste showed only the slightest weaknesses or defects, it was immediately excluded from further tests.

Accordingly, in the best list at the beginning you will only find cooling pastes that could pass the test run to the bitter end without any restrictions. Not only was a single test winner determined, the results were subsequently broken down into the different price classes. The experts thus took a lot of time and effort for a good test result.

Of course, the thermal conductivity had an enormous importance and significance for the final result in the test. Another important point was, of course, the service life. Even the highest-quality and most expensive thermal paste has to be replaced at some point. The godfathers therefore also had to withstand a long-term test under very strict and difficult conditions.

The compatibility with other materials was also checked in the test. If a certain unexpected incompatibility appeared in the comparison, the cooling pastes were also removed from the test program. In the end, of course, the well-known price-performance ratio played a significant role in the test verdict.

What should I look for when buying a thermal paste?

Before you go to the stores or online stores to look for a thermal compound from the test as well as comparison, you should answer some important questions beforehand. Only then can you be sure that you choose the right product. It is important that you choose a high-quality paste with known ingredients. In the test, it was found that a good composition can be guaranteed with the well-known brand manufacturers.

In view of the very reasonable prices of a thermal paste from the test, you should by no means make savings at the wrong end. A thermal paste performs a very important task and therefore you should not pay attention to the purchase price of these products if necessary.

However, it is also important that you consider the area of application. Different pastes are recommended for each application. Mostly, however, a thermal paste for computers is needed. In such cases, you will be able to find an almost endless selection of products. Do not only use this information, because on the Internet you will find a number of other tests and comparisons.

Last product update on 2021-04-10 | Source: Amazon Affiliate