Best Thermal Pastes : Compound Thermal Grease for CPU

If your processor (CPU) is heating up then, it can hamper your system’s performance of your CPU or GPU. And if the problem persists even after installing a new heatsink, then there might be issues with heat conductivity and heat dissipation. A thermal grease will help you to resolve this type of problem. Hence we have created a list of the best thermal pastes you can apply on the laptop.

In this guide, you will find top rated CPU thermal greases for overclocking and how much thermal grease you should apply.

Best Thermal Pastes

Don’t forget to explore this list of best CPU coolers

What is Thermal Paste?

The thermal pastes are high heat conductive substances used to help fill the microscopic gaps in between a heatsink and a CPU/GPU. These gaps can trap air and compromise the heatsink performance. It is also known as thermal grease, CPU grease, heat paste, heat sink compound, heat sink paste, thermal compound, thermal gel, or a thermal interface material.

How Much Thermal Grease Should I Apply?

One or two drops of thermal paste are enough. All you have to do is apply a paper thin layer of the thermal paste, covering the entirety of the CPU. It will cover the entire surface area, and help with maximum heat conduction and dissipation.

So, now that you know what it is and how to use it let’s look into details about all Non-Capacitive and Liquid Metal thermal compounds available in the market.

Best Thermal Pastes in 2020

CPU Thermal Pastes for overclocking

ARCTIC MX-4 Carbon-Based Thermal Paste
Arctic Silver 5 Thermal Compound
Thermal Grizzly Kryonaut High-End Ceramic TIM
BAY Direct
Noctua NT-H1 Thermal Paste for Overclocking

#1. ARCTIC MX-4 Carbon-Based Thermal Paste

ARCTIC MX-4 Carbon-Based Thermal Paste

The Arctic MX-4 thermal paste is composed of carbon micro-particles. It gives an extremely efficient thermal conductivity, meaning all the high temperatures generated in the CPU and GPU get efficiently dissipated.

Since it is completely metal free, there is no possibility for electrical conductivity, hence no chance for an accidental short-circuits. Furthermore, in contrast to silicone and metal-based thermal pastes, MX-4 will not lose performance over time. Once applied, it will work well for over eight years on a stretch.

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#2. Arctic Silver 5 Thermal Compound

Arctic Silver Thermal Paste

The Arctic Silver 5 is a silver based thermal paste which contains a high-density filling of micronized silver with enhanced thermally conductive ceramic particles. It also contains sub-micron zinc oxide, aluminum oxide, and boron nitride particles. It is also worth noting that it doesn’t contain any silicone. Instead, advanced polysynthetic oils are used as the suspension fluid and are highly effective and efficient at his work.

The thermal paste has been experimentally proven to reduce CPU core temperatures by more than 3-12 degrees centigrade when compared to more traditional thermal compounds. The Silver 5 is often the preferred bond-line between high-end CPUs and premium heatsinks.

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#3. Thermal Grizzly Kryonaut High-End Ceramic TIM

Thermal Grizzly Kryonaut Thermal Grease Paste

The Thermal Grizzly Kryonaut is one of the most powerful thermal pastes. In fact, it is one of the preferred choices for high demand necessities of overclocking communities. It is also used in industrial sectors where a critical cooling system is necessary. This fact also makes the paste very expensive. If you overclock your system, then this will serve your needs most efficiently.

The paste is highly stable and won’t even dehydrate at temperatures up to 80-degree centigrade. It is made up of nano-aluminum and Zinc oxide mixed in a ration that provides optimal thermal conductivity.

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#4. ThermalCoolFlux

ThermalCoolFlux Polysynthetic Silver Thermal Paste

This Thermal Cool Flux comes in a pack of five thermal paste syringes. Each of these syringe consists of 1.5g of the thermal paste. Each syringe is enough for at least one CPU/GPU core.

It is also one of the cheaper alternatives which are also effective and stable. It is the ideal thermal paste for regular consumers. The paste can reduce your CPU’s temperatures by up to 8 degrees. The grease appears as a think silver colored polysynthetic thermal paste grease.

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DEEPCOOL thermal pastes

The DeepCool Z9 is designed to help with maximum heat dissipation. It is also a pure electricity insulator, and so you will not have to worry about short circuits. Each syringe comes with 7 g of the paste which is enough for 5 to 7 applications on CPUs/GPUs. After applying for one time, the gel will ensure proper heat dissipation for 4 to 5 years.

The price for the paste is also reasonable and is mainly targeted to average users with high-end systems. The grease can reduce temperatures by up to 2 to 5 degrees.

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JACOBSPARTS CPU thermal pastes

Jacobsparts thermal paste much like the ThermalCoolFlux comes in a pack of 5 syringes. Each one is filled with 1g of the substance which is sufficient for one use. It is most helpful for ‘use and throws’ purposes when you don’t want to store an already used product.

It is one of the most affordable thermal pastes on the market. Now it will not be very useful for at high-level overclocking use. But Under normal conditions, the paste is capable of keeping the CPU temperatures between thirty-five to forty degree centigrade.

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#7. BAY Direct

BAY Direct 5-Pack Reusable Thermal Paste

Bay Direct is also sold in a pack of 5 syringes, but it is on the pricier side. In total, you get about 200gms of reusable high-quality thermal paste, which provides maximum results. This thermal paste is highly recommended for computer builders and electricians.

Besides CPUs/GPUs, the thermal can be used to lower temperatures on LEDs, chipsets, and other PC components. It has a high heat conduction capability and is also highly stable. The paste is also non-volatile, non-corrosive, and non-toxic, which means even beginners can use it without much worry.

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#8. Noctua NT-H1 Thermal Paste for Overclocking

Noctua NT-H1 Thermal Paste

The NT-H1 is the perfect combination of ease of use and high-quality performance thermal paste. The substance is a hybrid of different micro-particles which gives it great thermal conductivity and long-term stability.

The paste spreads under pressure so you will not have to spread it yourself. Just put a drop on the surface of the CPU/GPU and install the heatsink, and you are good to go. It is not electricity insulating, but it has a low dielectric constant and a high dielectric strength which makes chances of short circuits an impossibility.

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YEECHUN 10-Pack Silver Thermal Paste

Yeechun thermal paste is the most affordable thermal paste on this list. For a low price, you get a pack of ten syringes filled with 1.5g of thermal paste. Also, if you are worried about quality, it also provides a 90-day warranty for its users.

Now the thermal paste has not been developed for high demand usage. If you are an overclocker, there are better alternatives. However, it will help regular users to bridge the gap between their CPUs/GPUs and heatsinks. It can lower CPU temperatures by around 2 – 3 degrees.

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Also Read:

Which thermal grease you are going to buy for cooling your system? Do share your view with us in the comments section.

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Raghuvir Gupta
Raghuvir is an editor-in-chief who takes care of contents uploaded on He is passionate about exploring new products and technologies.


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