Top 10 Best Thermal Pastes of 2021 [Reviews & Rating]

Thermal Paste

The thermal paste is the most effective heat conductor which is also very capacitive; you must have a clear idea to choose the heatsinks or coolers to fit on your processor.

The thermal paste will be very handy to fill even the tiny gaps which may improve the overall cooling and performance, it is also possible to use different types of thermal compounds like silicon, ceramic, metal and carbon-based materials.

Top 10 Best Thermal Paste

If your processor is running too hot even at a low temperature then it is the best idea to use a good thermal paste.

It is also possible to apply the paste to laptops because it may not be coated well and it will be constructed with average quality materials.

The most important function of the thermal paste is to spread the heat from the processor or chip to the cooling device.

The chips and coolers will not mix together at every spot, so the thermal paste is used to fill the gaps that are not properly connected to the processor then it is transferred to the cooler.

The computers and laptops need a thermal paste for their efficient cooling and consistent performance.

The cooling can make your system to work for a long time without any damages; it can be able to dissipate heat for keeping the powerful CPU to be cool.

Most of the thermal paste comes with a specific tool to spread the paste over CPU or motherboard except for a liquid metal paste.

The silver-based thermal paste offers a good performance after applying it you may get a better result, but it totally depends on how well you have squeezed the paste throughout the CPU.

Some of the best thermal paste for computer or laptops:

#1: Arctic MX-4 Thermal Paste – Best Overall

Arctic MX-4 is one of the leading thermal pastes and it is filled with a microparticle of carbon which improves the thermal conductivity of the paste that makes it more effective.

The MX-4 is very easy to use even for beginners; it is not electrically conductive because it is not made up of metallic particles.

This thermal paste comes with a high level of durability because it is constructed with a fine metallic silver particle.

Arctic MX 4


  • Renowned premium-grade thermal compound
  • Weight/Size: 3.5g
  • Density: 2,49 g/cm³
  • Volume: 1,4 ml
  • Not electrically conductive
  • Excellent long-term stability

It can directly connect with each and every pin on the CPU and offers a soft consistency for the paste.

It has a 0.64-ounce tube, which provides enough amount of thermal paste for multiple applications.


  • Easy to apply
  • No metallic particles
  • Suitable for overclocking


  • Thin tube

The design is very simple so that you can eliminate the risk of creating spills or spoiling the hardware.

If you need a high-quality thermal paste that doesn’t need any frequent replacement this will be a great choice.

Arctic MX-4 is composed of carbon particles which is very easy to use.

It provides the conductivity rate of 8.5W/mK because it is a carbon-based compound which gives you the superconductivity.

It is also compatible with nitrogen, air coolers as well as liquid.

The carbon material used in the thermal paste can enhance thermal conductivity and makes it even more efficient.

It is very easy to apply when you squeeze the paste you can place the cooler as a paste so it not needed to any settling time.

Easy to Apply

The Arctic MX-4 Thermal Compound is very easy to use, even beginners can use for some applications. The main purpose of this paste is to avoid issues between CPU and cooler.

Safe to use

Actually this thermal doesn’t contain metallic particles so electrical conductivity is not a bigger issue. If silver comes in contact with copper then it will not produce any major problems 


MX Thermal paste is well known its high-performance and quality that’s why it ranks at the top position in markets. Its carbon particles produce high thermal conductivity. 

Well Proven Quality

This thermal paste has been tested and undergone quality test by the experts over the years yet the formula and composition remains unchanged. It has been 100% well- proven.


  • Easy to apply
  • No metallic particles
  • Suitable for overclocking


  • Thin tube

The Arctic MX-4 is suitable for lighter use and it’s best to use on desktops and laptops. This high-quality thermal paste is suitable for gamers also for dozens of applications.

#2: Arctic Silver 5 Thermal Paste- Best Silver Compound

Arctic Silver 5 is the latest and most advanced thermal greases in the market, it is also the best high-density paste and it can be squeezed to come out from the tube.

It offers an efficient performance which consists of 99.9% micronized silver; the micronized silver has the ability to effectively handle the heat-producing CPU even at a very higher or demanding performance.

This thermal paste will take some time to do its best only after a few hours passed because it takes an affordable time to settle.

It is very feasible to apply even for beginners; this thermal paste provides a lot of convenience and safety to the users.

Arctic Silver 5 Thermal Paste


  • Made With 99.9% Pure Silver
  • 88% thermally conductive filler
  • High-density filling of micronized silver
  • 3.5-gram syringe
  • Weight: 0.16 ounces
  • Product Dimensions: 8.5 x 2.5 x 6 inches

The Arctic Silver 5 has fine silver particles which can provide an extraordinary thermal conductivity rate; it is also a metallic substance which can be combined with liquid nitrogen and it is well compressed as a fluid.

It is mainly designed to give an easy performance from the tube; it enhances the thermal ability and the long-term stability of the processors.

The Arctic Silver 5 thermal paste gives long-lasting support because it is constructed with high-quality material so it is very durable.

Break-in Period

It is designed with a break-in period in which the thermal compound inside the tube changes its consistency and increases the performance.

If the break-in period is over, you no need to turn off your PC and the temperature will not change.

It is not electrically conductive so you need not get conscious of heat or other factors.

This thermal paste is well tested in a huge number of processors and it offers efficient performance without any discomfort or issues.

It produces the thermal conductivity at the rate of 8.9W/mK which is a good output for the users.


  • Pure silver
  • High stability
  • Unique shapes


  • Lacks in consistency

Arctic silver 5 is extremely dense which perfectly seals between your CPU and cooling technology. The cooling system works more effectively and it prevents overheating.

#3: Noctua NT-H1 Thermal Compound – Best for Laptop

Noctua is one of the best coolers which make the systems very cool under heavy performance and use; it also provides a secure thermal bond between the heat sink contact base and the CPU.

It is the hybrid thermal compound that offers a high level of cooling without any electrical conduction.

It gives faster performance and does not require any burn-in time.

Noctua NT-H1


  • Renowned premium-grade thermal compound
  • Weight/Size: 3.5g
  • Density: 2,49 g/cm³
  • Volume: 1,4 ml
  • Not electrically conductive
  • Excellent long-term stability

It is highly efficient for producing quality products and uses a good combination of different types of microparticles to give better performance.

This hybrid thermal compound allows for minimum thermal resistance and long-term stability.

It is made up of thick particles so it makes the paste slightly drier but it is very easy to apply.

It has a long-lasting durable life of up to two years and then you replace it with another tube.

noctuanoctua 1noctua 3noctua 4noctua 5
Weight/Size3.5g10 g3g10g15x12cm
Volume1,4 ml4,0 ml1,2 ml3,6 mlN/A
Density2,49 g/cm³2,49 g/cm³2.81 g/cm³2.81 g/cm³
DescriptionRenowned premium-grade thermal compoundRenowned premium-grade thermal compoundFurther improved second generation thermal compoundFurther improved second generation thermal compoundCleaning wipes for removing thermal compound
NA-CW1 WipesN/AN/A3x included10x included20x included

Installation is very simple and quick; you can just apply a small amount of paste on to the middle of your processor or CPU’s heat spreader and press the cooler to sit tightly above your CPU.

It is fully compatible with all materials and it is well suited for aluminum and a copper cooler; this type of thermal paste works efficiently even at lower temperatures to deliver better performance and it may be easy to clean.


  • Most recommended model
  • Non-corrode
  • For all heat sinks


  • Small tube

Noctua is a leading manufacturer that keeps your system cool even under heavy performance. NT-H1 is a hybrid thermal compound which produces a high level of thermal cooling with no electrical conduction.

#4: Cooler Master MasterGel Maker Nano Thermal Paste – Best for Laptop

It is specifically designed for offering the best thermal conductivity for high performance CPUs or chipsets. It is not electrically conductive so you may avoid the problem of short-circuiting and provides good protection as well as performance for long-term use.

Cooler Master Thermal Paste


  • Ultra-high conductivity for Chipset (11 W/m.K)
  • Made of Nano Diamond particles
  • Excellent Viscosity
  • Weight: 1.12 ounces
  • Dimensions: 7.4 x 4.5 x 0.8 inches
  • Non-electrical conductive

It is constructed with a Nanodiamond particle which makes the material maker to be less weight and it will be very easy to spread or remove the erosion when applying it.

It is made up of silicon which gives dielectric energy and it is appropriate.

It has a unique composition that combines the fine carbon particles of grade diamond which produces the graphite-like conductivity.

It gives a smooth feel when you apply; the estimated temperature of the MasterGel is between 50 to 150 degrees.

It is a new modeled thermal paste but gives a maximum thermal performance which produces thermal conductivity of 11W/mK. The MasterGel has excellent viscosity so you can easily apply or spread it over your CPU’s.

The liquid nitrogen cooling system can offer peak performance which can be used for multiple applications.


  • Nano Diamond particles
  • Good Viscosity
  • Prevent short circuits


  • Expensive

This thermal paste from cooler master is the best choice for gaming computers, it’s well known for efficient working. It is very cheap and thus makes a great PS4 thermal paste.

#5: Thermal Grizzly Kryonaut Thermal Grease Paste – Best for Overclocking

The Thermal Grizzly Kryonaut Thermal Grease Paste gives a good cooling performance and limits your CPU from overclocking or overheating, it is a better grease-based compound and capable of delivering a maximum heat transfer between the CPU and cooler.

It is not electrically conductive so you can easily squeeze the paste from the top and spread it over the processor, it may produce any short circuits.

Thermal Grizzly Thermal Grease Paste


  • Convenient 1.0 gram syringe
  • Popular choice for overclockers and extreme gamers
  • Thermal conductivity 12.5 W/mk
  • Weight: 0.16 ounces
  • Dimensions: 9.8 x 7.9 x 5.9 inches
  • Delivers optimal heat transfer

It has a very small syringe but produces an enormous amount of thermal conductance and can ideal for applying at cramped spaces.

It is a silicon-based thermal paste so you can feel a little tight and harder to apply, it is not similar to other pea methods because it will not with this paste.

The Thermal Grizzly Conductonaut can lower the temperature by over 10 degrees, but it depends on your cooler, heat sink and other CPU’s, the lower temperature can protect your system from overclocking your CPU and gives better performance.

The thermal conductivity rating can be 12.5W/mK; you can gently apply the paste on your middle of the hand and spread it over the heat-resistant spots.

It is designed to give the most specialized structure and makes the processor dry of up to 80 degrees Celsius.


  • Easy to apply
  • Best for gamers
  • Good thermal resistance


  • No drastic improvement

It is easy to apply thermal grease which helps in decreasing the temperature up to 240 degrees Celsius. With this product, the user can experience excellent thermal conductivity and durability.

#6: Gelid Solutions GC – Extreme Thermal Compound

The Gelid Solutions GC-Extreme Thermal Compound is the best ideal thermal compound but it offers very low thermal conductivity ratings, it is not electrically conductive so it will be very easy to clean.

You can just spread the paste around the processor to reduce the CPU from overheating; it is very easy to apply even for beginners.

Gelid Solutions GC-Extreme Thermal Compound


  • Achieves best heat conductivity from your CPU o VGA Card
  • Weight: 0.16 ounces
  • Thermal Conductivity of 8.5W/mk
  • Density of 3.73g/cm³
  • Dimensions: 1.6 x 0.4 x 1.6 inches
  • Operating temperature: -45 degrees up to +180 degrees Celsius

It is made with lightweight materials so the installation process can be quite simple and consistent.

The GC- Extreme produces the thermal conductivity of up to 8.5W/mK and it is a specialized and non-curing compound which makes it even more efficient.

The durability of this gelid solution is extremely high because of its lightweight carbon particles.

If you want the best thermal paste for your graphics card or a graphics processor then this gelid solution will be an ultimate choice, it has a good capability to handle the system efficiently and transfer the heatsink from your GPU.

It is affordable when compared to other products and it is non-toxic, non-corrosive and non-curing which offers superior thermal performance than the other thermal pastes in a market.


  • Not corrosive
  • Safe application
  • Quick performance


  • Expensive

#7: Coollaboratory Liquid Ultra Thermal Compound

It is a liquid cooling method that is becoming more accessible and offers high conductivity and a high temperature of the liquid that may be easy to clean and install.

It has the capability of transferring the heat and reduces overclocking or overheating from your CPU or processor.

It is designed to give easy access for the users; you can just pour a little drop of liquid over the motherboard to control the heat.

Coollaboratory Liquid Ultra Thermal Compound


  • Liquid Ultra thermal compound
  • Weight: 1.44 ounces
  • 100% metal Thermal Compound
  • Density of 3.73g/cm³
  • Dimensions: 4.3 x 0.8 x 0.2 inches
  • Easy application

The Coollaboratory Liquid Ultra Thermal Compound provides a slick and efficient performance and it wetter than the normal paste.

If the grease-based thermal paste does not offer you a good result then it is a better idea to choose the liquid metal thermal compounds.

It can produce the thermal conductivity of up to 38.4W/mK.

This will work very efficiently on CPUs that don’t have integrated heat spreader equipment.

It should not be used with aluminum heatsinks, because it can affect your system and the processor.

It has an ability to push this liquid cooling system to peak performance even at high temperatures.

It is much wetter than other paste and this liquid thermal paste can be able to decrease the temperature of up to 10-12 degrees Celsius.


  • Includes cleaning kit
  • Pure metal
  • RoHS Compliant


  • Hard to use on glass surfaces

#8: ThermalTake TG-7 Extreme Performance

The Thermaltake paste gives reliable performance and it is made with a diamond power which is fixed inside the tube to offer the best thermal conductivity.

It provides an extreme long-lasting thermal power with an additional diamond particle; it is very easy to apply, you can just pour a drop of thermal grease on the relevant surface of the heat sink to reduce overclocking or overheating.

ThermalTake TG-7 Extreme Performance


  • Designed for Extreme Performance
  • Weight: 0.16 ounces
  • Has Diamond powder for improved thermal conductivity
  • Easy to apply
  • Dimensions: 6 x 3.5 x 5 inches
  • Longer lifespan over standard silicon-based compounds

It has a very long lifespan and it is more effective than silicon-based heat grease and provides good protection against heat damage.

It is incredibly soft and easy to apply; the diamond particles within the paste give an effective temperature between 50 to 150 degrees Celsius. It comes with a well designed cooling system and a compressor which is not sensitive to short circuits.

The uniquely designed diamond filters offer improved thermal conductivity with a good amount of thermal capacitive capabilities.

It also has excellent viscosity which helps you to spread the paste over the processor without cracking or dying it.

This thermal was tested over the large processors and gives an adequate thermal conductivity because it is made with a fine silver particle.

It uses a micronized silver particle along with a ceramic particle to create a high performance and a long-lasting design.


  • Has diamond powder
  • Long shelf life
  • Great for several uses


  • Dries up fast

#9: Thermal Grizzly Conductonaut Liquid Metal Thermal Compound

The Thermal Grizzly Conductonaut Liquid Metal Thermal Compound provides an absolutely best thermal performance, it can prevent your system or CPU from overclocking or overheating it is capable of maintaining the temperature.

It has an extremely high thermal conductivity up to 73W/mK which is very higher than the other normal pastes.

It is a liquid-based thermal paste that avoids the risk of spilling or spreading so it can be easy to apply.

Thermal Grizzly Thermal Compound


  • 100% liquid metal compound
  • Weight: 0.32 ounces
  • Useful for  overclocking
  • 1g of Thermal Grease
  • Dimensions:6.9 x 3.9 x 0.3 inches
  • Easy application

The syringe is very small and it can weigh up to one gram of the thermal compound so it provides safety to use.

It gives an efficient performance with liquid-cooled processors and the air-cooled CPU.

The Conductonaut gives an extraordinary thermal performance but it is not equal to liquid ultra, it is also possible to give a good blend of materials which gives more consistency than other metals like gallium or indium but it gives an easier use for even beginners.

The design is very simple but the combination of metals is conductive so you must not place it near anything that takes the charge, this liquid metal will not work efficiently at cold conditions which are mixed with liquid nitrogen or compressor-based system.

It works with a great air cooler so the Conductonaut can easily handle the heat and overclocking quickly.


  • For gaming laptops
  • Easy to apply
  • Durable tubes


  • Squirts bad

#10: Prolimatech PK-3 Thermal Paste

It is the best long-lasting thermal compound that provides a high thermal conductivity but it boasts very low thermal impedance.

The heat sink and the processor make full contact between the air and the CPU.

It is constructed with a fine metallic silver particle which creates a small gap for air.

These gaps can act as a thermal insulator that inhibits the transfer of thermal energy from your processors.

Prolimatech Pk-3 Nano


  • 30 gram syringe and easy-to-spread application
  • Weight: 1.12 ounces
  • Thermal Conductivity of 11.2 W/m-°C
  • Excellent long term stability
  • Dimensions:10.6 x 3.4 x 2.8 inches
  • Thermal Impedance of 0.013°C-in 2/W

It is specifically designed with a nanoparticle, which may fill the small air gaps and allows a good transfer of heat; it is not electrically conductive so you may not get any short circuits or overclock.

It has a high level of viscosity so you can easily apply a little drop of thermal paste over the heat-producing equipment.

It is very effective than standard silicon-based heat grease or CPU and it provides the appropriate protection against heat damage so it can last for a long time.

The thermal conductivity of this Prolimatech Nano is 11.2W/mK which is very low when compared to other products; you can safely use it on your GPU because it is non-corrosive and electrically non-conductive.

It can work well with a nitrogen-based cooling system or compressor-based cooling system it is not only limited to copper.

It can attain a peak operating temperature ranging from 50 to 110 degrees Celsius.

It also comes with an integrated heat spreader for heat dissipation between a heat spreader and the CPU.


  • Maximize heat transfer
  • Long term stability
  • Low dry out


  • Performance decreases over time

Best Thermal Pastes – Buying Guide

When you have a new processor, you can use it for enhanced gaming, modeling or standard work but you must buy the top quality paste so that the CPU can stay cool without any overclocking or overheating.

Thermal Conductivity

When you plan to buy a thermal paste make sure that it has good thermal conductivity, thermal greases play an important role in managing the temperature of a microprocessor in a computer or other electronic devices.

They must provide high versatility and reliability to keep the system cool and safe.

Every thermal paste has a good thermal conductivity rating which is nothing but to transfer the heat from the processors to the heatsink.

If the thermal conductivity is more than the temperature, then it will be reduced more.


The thermal paste is a thermally conductive substance that can be applied between the CPU and its cooler which helps to prevent the system from overclocking.

If you need thermal paste for just one or two processors then you need not worry about the density or availability of the paste, but every thermal paste will contain enough paste to install your CPU.

To enhance the application process easier you must choose the thermal paste with an adequate amount of density so that it can squeeze easily throughout the CPU.

The liquid thermal paste has less density than the normal thermal paste.

It must also have an even consistency for applying the paste directly to your CPU or GPU.

It should be a carbon-based compound and must be free from electrical conductivity so that it may be easy for you to apply without any short circuits.


When you are ready to apply a thermal paste over the processor or any other equipment you must be careful because it can affect or harm you by short circuits.

You must choose a paste with low conductivity so that you can use it without any shorts even if it touches the electrical components.

The best approach to apply the paste is to take a pea-sized amount at the center and allow the heatsink to push the paste on the CPU.

This technique avoids spreading of paste over the heat spreader it works well with a less viscous paste.

If the thermal paste can conduct electricity then it may lead to the short circuitry.

It is very important to choose the product and ensure whether it is conductive or non-conductive, if it is not electrically conductive then it is safe to use.

How Thermal paste works?

Thermal Paste fills even the little gap between the heatsink and processing unit, which means it provides a constant connection and cools effortlessly.

There are different types of thermal paste available in the market- you’ll see silicon-based compound, metal-based compound, carbon compound, ceramic-based compounds.

Among these types, for most applications, a metal-based compound is used because it provides excellent thermal conductivity.

Thermal paste flows continuously as a liquid, the maximum temperature limit is 150 degrees C whereas some paste can withstand up to 300 degrees C.

How To Apply Thermal Paste

If you’re a beginner then applying thermal paste might be a little bit daunting, because if applied too much it can cause a lot of damages to your PC’s internal components.

If you use ceramic and carbon-based thermal paste then all you have to do is squeeze a bit of paste and place over the area where the heatsink contacts outside of the CPU.

No matter whether you’ve used it before because it’s very simple, by pressing the two pieces together the paste will spread out and fill the gaps or air bubbles.

By chance, some ceramic paste will be manufactured with a spreader which would be easy to spread before applying. A thermal pad is simple to use as it removes the leftover thermal grease easily.

Types of Thermal Paste

There are different types of thermal compounds available in the market.

Ceramic / Silicone-based

Ceramic /Silicone-based compounds make use of metal oxides or ceramic powder suspended in silicone compound.

This type of thermal paste is cheaper than the Metal and carbon-based thermal compounds.

It is electrically non-conductive and the performance of the thermal paste completely depends on the type of metal oxide.

Some of the metal oxides which are used in this paste are Aluminum oxide, Boron Nitride, Zinc oxide, Silicon Dioxide, and Aluminum Nitride.

Don’t choose pure silicone paste that is worst of all and must be neglected at any cost.


Metal-based thermal paste rules the market as it uses metal particles as a filler and contains higher thermal conductivity.

These heatsink compounds are expensive yet it can be used in high-performance gaming PCs and for overclocking purposes.

The most demanding metal particles include silver and aluminum.

Liquid Thermal paste

The only disadvantage of metal-based thermal compounds is they are electrically conductive and capacitive.

It’s highly recommended to use the paste carefully over the CPU or GPU because it may cause damage to your components.


The next type is Carbon-based thermal paste which is very close to the performance of metal-based thermal paste.

It is completely made of carbon particles such as graphite powder, graphite oxide as a filler, and diamond powder.

Thermal conductivity is too high and it is electrically non-conductive and non-capacitive.

More than that it is expensive when compared to ceramic or silicone-based thermal grease.

Hybrid Thermal Paste

We all know that hybrid thermal paste is a mixture of different particles that form a single thermal paste.

Actually, it contains a mixture of metal particles along with metal oxides or some other particles.

Wrapping Up!

Getting the right thermal paste and adequately applying it can enhance the temperature and improve the performance of your CPU/GPU.

About Kim Goodwin

Kim Goodwin holds a Master's in thermal engineering from the University of Rhode Island. At Thermo Gears, she reviews most equipment that uses thermal imaging technologies.