Best Thermal Pastes for Your PC in 2021

best thermal pastes

If you’re running a high-performance system, or a mid-grade system at max capacity, you may have noticed that the temperature output of your PC is considerably higher than that of more basic systems.

While this is completely normal, it also requires a bit more monitoring and tinkering to maintain safely than a more basic, simple system.

Fortunately, the solution is affordable, simple, and easy to take care of on your own; you just need to find the best thermal paste for your PC setup.

Modern PCs require the use of a thermal paste of one sort or another, plain and simple. This isn’t a matter of opinion like it was 15-20 years ago; at which time you really could get by with just a fan system to keep your CPU, GPU, etc. at an acceptable temperature level.

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Last update on 2021-10-21 // The links above are affiliate // Images from Amazon

Why Do Modern High-Performance Systems Produce More Heat?

Heat is an unavoidable byproduct of electronic operations; particularly in complex electronics such as an advanced PC.

As technology advances, the use of more and more complex internal PC parts has been necessary to efficiently run our increasingly complicated tech. Modern CPUs, GPUs, HDD, and ODD require more electrical current to perform their tasks.

As the electrical input runs along wires, circuits, etc. it meets a certain level of resistance. This friction is how the byproduct of heat is produced. You can avoid overheating by using a combination of an efficient CPU cooler, case fans, and the best thermal compound.

Under What Circumstances Do You Need a Thermal Paste?

When you buy a new computer, the heat sink and CPU already have the appropriate layer of thermal paste; or compound; laid between the surfaces. Unless you’re buying a unique chassis setup that doesn’t come with the parts that you’re likely to want to handpick individually, you won’t have to worry about thermal paste when you first set up.

The chances are good that if you’re reading this guide, you’re doing some modifications to your PC or you’re having overheating problems.

Whether you’re tackling a simple task like switching out your CPU or gutting your case and starting fresh, now is the right time to bust out the thermal paste. Even if there’s thermal paste already in place that seems perfectly reusable; don’t.

Clean the surfaces that are already tacked completely and then reapply the best thermal paste for your PC project needs. This guide will walk you through the entire process of removing and applying thermal compounds since it’s very important that you do it right.

This will take care of any existing overheating problems that were related to the thermal paste as well. If you continue to have overheating problems after replacing your thermal compound you should clean your fans, case, etc. and continue to troubleshoot from there.

Which Thermal Paste is Right for You & Your PC?

Choosing the best thermal paste for GPU, CPU, or general PC maintenance can be a bit tricky. Largely because opinion varies so widely on which ones are best, which ones are rubbish, or whether there is any difference at all between different types of paste.

The main division of opinion is based around whether or not using filler compounds that are simultaneously conductive and capacitive (such as silver) is preferable to using lower thermally conductive fillers (such as zinc oxide).

The main concern here is that materials like silver can cause A LOT of damage if it comes into contact with your circuits. The ingredients found in different thermal compounds can include a combination of the ‘Filler Properties’ found here.

14 Best Thermal Pastes

Arctic Silver 5 AS5-3.5G Thermal Compound

Best Thermal Paste for CPU and GPU Applications

arctic silver 5 as5-3 5g thermal paste - Best Thermal Paste for CPU and GPU Applications
Despite the concerns surrounding most silver fillers, you can ask almost any techie if they’d recommend Arctic Silver 5 as a thermal paste, and they wouldd say yes. This thermal compound is 99.9% micronized silver; which is not conductive like most silver compounds. It is guaranteed not to “run, bleed, or migrate” as well, which keeps your circuits extra safe while taking advantage of the high thermal conduction of the filler.

  • Has a thermal conduction rate of 350,000W/m2 degrees Celsius
  • Easy to remove and apply
  • Silver filler material comes in 3 different shapes to maximize the contact area
  • Using silver fillers makes a lot of people nervous about the safety of their circuits

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One of the Very Best Thermal Paste for GPU

arctic mx-4
The ARCTIC MX-4 is another favorite amongst gamers, overclockers, and other PC enthusiasts. This is a really great choice if you’re avoiding metal and looking for a high quality thermal paste that won’t need frequent replacement.

In spite of its lack of electrically conductive metal filler, it is highly thermally conductive.

ARCTIC MX-4 is composed of carbon microparticles, which actually outlasts pastes with metal or silicon fillers. This durability is a huge selling point for PC users who frequently move their computer around or open up their case.

  • Guaranteed not to damage circuits or other delicate parts if contact occurs
  • Impressive durability for a thermal paste
  • It is also noncorrosive, nonconductive, and non-capacitive
  • Can be difficult to remove

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Noctua NT-H1

Top of the Line Thermal Paste for Your PC Mods

noctua nt-h1 - Top of the Line Thermal Paste for Your PC Mods
Noctua is notorious for making quality products, from their fans to their CPU cooling systems. Their thermal paste is no exception. They use a unique combination of different micro particles in their filler in order to provide some of the best heat sinking possible.

Noctua NT-H1 is yet another thermal paste that withstands the tests of time and use. It is estimated to be at max effectiveness for cooling your PC for up to 3 years.

  • Long-lasting and high performance
  • Great price for those on a budget
  • Can be stored for later use (up to 2 years)
  • Exact ingredients are undisclosed
  • Can be difficult to remove/clean

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Innovation Cooling Diamond “7 Carat”

The Best PC Gear Deserves the Best CPU Thermal Paste

innovation cooling diamond 7 carat
This is another thermal compound that’s a bit of a mystery. It has great ratings overall, and works very effectively. However, they won’t disclose the exact ingredients of their filler. The filler does include Diamond powder; which is considered a high quality conductor. It has low phonon scatter and high covalent bonding.

For more information on the specifics of diamond conductivity, we suggest you check out this relatively interesting article, “Is Diamond a Conductor?“.

  • Has a thermal conductivity rating of 4.5W/m-K
  • Has thermal resistance of .25oC-cm2 per W
  • Unique diamond filler
  • Long-lasting and effective
  • Toxic
  • Difficult to remove/clean

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CORSAIR XTM50 Thermal Compound Paste

A Thermal Paste Designed for Mainstream Gaming Machines

corsair xtm50 thermal compound paste
CORSAIR XTM50 is a solid, non-conductive thermal paste that proves its best value in the mid-range market. It is very stable, it offers 5W/(m-K) thermal conductivity and comes with a very low 0.009°C -in/w thermal impedance, which is one of the main reasons it is suitable for a long-time use.

This is an eco-friendly thermal paste, based on Zinc Oxide; therefore, there should be no worries about its use and disposal. Moreover, this compound comes along with the application kit that should make the paste installation a piece of cake, while its overall performance should satisfy a large base of users that are seeking for the best thermal paste in the mainstream range.

  • Easy application
  • Eco-friendly
  • Good stability
  • Low thermal impedance
  • A bit too dense
  • A bit pricey

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Wigbow Ice Mountain №1

One of the Best Solutions for Your PC

wigbow ice mountain n1
Wigbow Ice Mountain No1 is definitely one of the best thermal compounds available on a budget. It is a high performance compound which is perfect for use on your CPU, GPU, and other heat sensitive parts that require a heatsink.

The base of this product is a polysynthetic carbon, which is highly effective for heat sinking and transference. It is particularly easy to apply in syringe form.

  • Really easy to use
  • Highly effective
  • Noncorrosive, nontoxic, nonvolatile, and fire resistant
  • Can be difficult to remove
  • Not on par with more expensive solutions

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Cooler Master MasterGel Maker Nano

Great Thermal Paste With the Best Conductivity

cooler master mastergel maker nano
This thermal paste is considered to have one of the best thermal conductivity for CPUs and GPUs with high-performance level. MasterGel Maker Nano comes with non-curing and non-electrical conductive features due to which there won’t be any short-circuiting. It’s a great option for those who need durable protection for high-grade performance.

Thanks to the NanoDiamond particles and good viscosity this thermal paste is rather light and easy both to spread and remove without drying out. Besides, it can survive a great range of temperatures from -50 up to 150°С. It’s a high-quality thermal paste which will make you forget about such unpleasant things as auto-oxidation or erosion over time.

  • reasonable price
  • easy to use
  • wide range of temperatures
  • NanoDiamond particles
  • warms-up very quickly

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Gelid Solutions GC-Extreme

A Solid Choice for the Best Thermal Compound

gelid solutions gc-extreme - A Solid Choice for the Best Thermal Compound
With thermal conductivity of 8.5W/mK, Gelid Solutions GC-Extreme isn’t a bad route to go if you need to replace your existing heatsinks or installing some new gear, such as a CPU cooler. It is easy to use and even comes with an applicator tool.

Gelid Solutions GC-Extreme is a specialized, non-curing compound which makes it more effective for longer periods of time, but also makes it riskier to move your computer around frequently. It’s also easy to clean up.

  • It’s non-electrically conductive which keeps your circuits and other components safe
  • It’s noncorrosive
  • Non-toxic
  • Difficult to tell how much is left in container
  • Expensive compared to similar products

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HY-883-4g Thermal Conductivity

A Great Mixture of Performance and the Price

hy-883-4g thermal conductivity
If you are looking for a good-quality thermal paste that will do the job and that won’t cost too much, HY-883-4g Thermal Conductivity Paste is the ideal option for you.

With this compound, you will get good stability, ease of use, and most importantly, solid performance. HY-883-4g Thermal Conductivity offers very good 6.5W/(m-K) thermal conductivity and comes fitted with both grease cleaning and easy application sets – the key reasons for its easy installation.

All in all, HY-883-4g Thermal Conductivity is a great deal for the value that it delivers, and definitely one of the best thermal pastes out there.

  • Affordable
  • Great stability
  • It comes in a package with the applicator
  • Easy to use
  • None

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Coollaboratory Liquid Ultra

The Best Metal Thermal Paste

coollaboratory liquid ultra
The Coollaboratory Liquid Ultra Thermal Paste was designed for optimized performance and ease of application. Wetter than normal thermal pastes, the Coollaboratory Liquid Ultra Thermal Paste provides a slick and precise application experience. Made 100% from metal it boasts a 38.4 W/mk capacity and helps to radically drop temperatures. Although, the product has been known to produce metal balls during application that need to be cleared before use, and is incompatible with aluminum coolers.

  • Pasty texture
  • Quick to apply
  • Made 100% from metal
  • Provides a serious drop in temperatures
  • Can drip
  • Metal balls can form during application
  • Incompatible with aluminum coolers

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Thermal Grizzly Kryonaut

Great Non Electrically Conductive Thermal Paste

thermal grizzly kryonaut
The Thermal Grizzly Kryonaut Thermal Grease Paste is an application dream with the included spreader tool and compound product. Not electrically conductive, the thermal conductivity hovers around 12.5W/mK, which allows this product to go head to head with many of the best thermal pastes on the market despite being relatively new to the competition. Thermal Grizzly Kryonaut Thermal Grease Paste is more expensive than most by up to double for half the amount of product, however, with the increased performance and staying power, this paste is worth it.

  • Thermal conductivity of 12.5W/mK
  • Easy to apply with spatula
  • Not electrically conductive
  • Expensive compared to competition

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An Affordable, yet Efficient Thermal Paste

arctic mx-2
ARCTIC MX-2 is a durable, non-electrically conductive thermal paste that offers solid performance and comes at a reasonable price.

This thermal paste is metal-free and super easy to use, which makes it suitable for newbies as well. It has a very good 5.6W/(m-K) thermal conductivity and excellent structural stability. This is the main reason for its longevity and the fact you can use it for more than eight years without a need for a change.

In other words, if you need a rock-solid thermal paste for your GPU or CPU, ARCTIC MX-2 is surely more than a good option for you.

  • Durable
  • Excellent performance
  • Easy to use
  • Affordable
  • None

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Thermal Grizzly Conductonaut

Excellent Thermal Compound to Reduce Your PC Temperature

thermal grizzly conductonaut
As spreading thermal compounds is a kind of delicate work, it’s really important to get a thermal paste that is easy to apply, and Thermal Grizzly Conductonaut is a good example. Its 1.0 syringe is convenient to use for spreading the paste – just squeeze a small drop onto the included swab and spread it. Still, be careful not to drop it onto the graphics card as you will brick it. By the by, this thermal paste comes with a changeable applicator nozzle on the tube.

Thermal Grizzly Conductonaut has 73 W/mk of thermal conductivity. It’s one of the best products to reduce the temperature of your PC down (up to more than 20°C) and to let it show its best performance.

  • affordable price
  • a changeable applicator nozzle on the tube
  • convenient and easy to apply
  • reduces temperature significantly
  • can’t be used with aluminum heatsinks
  • can brick the card if not applied carefully

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Innovation Cooling Graphite Thermal Pad

An Alternative Solution that Can Save You from a Lot of Mess

innovation cooling graphite thermal pad
If you are after innovative products that can give you the same, if not a better thermal performance than the traditional thermal pastes, and offer a few conveniences, such as reusability, Innovation Cooling Graphite Thermal Pad is the thing for you.

This graphite piece can be used as a CPU, GPU and even PlayStation thermal solution. It is available in 30x30mm and 40x40mm size and can be easily trimmed to the smaller dimensions if required. Moreover, it has operating temperature from -200°C till 400°C and, as mentioned, it offers reusability, which is one of its biggest advantages over the thermal pastes, and its key selling point.

Along with that, Cooling Graphite Thermal Pad offers a mess-free installation and comes with only a few of flaws, which include its electrically conductive nature that demands careful installation and complete absence of power.

All in all, if you are into good cooling solutions and are not burdened by the traditional approach, Cooling Graphite Thermal Pad might be an ideal choice for you.

  • Reusable
  • Less messy than the thermal paste
  • It demands careful handling because it is electrically conductive

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About author

TheTechLounge editorial team consists of versatile tech enthusiasts. Each of us specializes in the specific area (from photography to virtual reality).
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