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Mastering Thermal Paste Selection: Top Trends and Choices for 2023

Thermal pastes

In the intricate world of electronics, thermal pastes have emerged as silent heroes, ensuring optimal performance and longevity of devices. As we navigate 2023, these compounds have become more advanced, catering to the nuanced needs of high-performance CPUs and GPUs. For businesses, selecting the right thermal paste is not just about maintaining device temperatures; it’s about delivering consistent, top-tier performance to end-users, reinforcing brand reliability, and ultimately driving sales in a competitive market.

Table of Contents
The science behind thermal pastes
Top thermal paste brands of 2023
Factors to consider when choosing thermal pastes

The science behind thermal pastes

Thermal pastes

Transitioning from the introduction, let’s delve deeper into the science behind thermal pastes and their significance in the realm of electronics.

What is thermal paste?

Thermal paste, often referred to as thermal compound, grease, or gel, plays a pivotal role in the electronics industry. Its primary function is to act as a thermally conductive medium, bridging the gap between heat sinks and heat sources, such as high-power semiconductor devices. By eliminating air gaps or spaces, which act as thermal insulators, thermal paste ensures that heat is transferred efficiently, maximizing heat dissipation. This is crucial for maintaining optimal CPU temperatures, especially when these components are pushed to their limits.

Why quality matters?

The quality of the thermal paste directly impacts the performance and longevity of electronic systems. A high-quality paste ensures efficient heat transfer, preventing overheating and potential damage to the components. On the other hand, subpar pastes might not provide the desired conductivity, leading to inefficient heat dissipation. Over time, certain thermal pastes can degrade, losing their effectiveness. This degradation can result from factors like pump-out, where the paste gets displaced due to varying rates of thermal expansion and contraction between the die and the heat sink. Another challenge is the separation of the polymer and filler matrix at high temperatures, leading to increased thermal resistance.

The evolution of thermal pastes

thermal pastes

Over the years, the composition and efficiency of thermal pastes have seen significant advancements. Earlier versions primarily consisted of basic compounds with limited thermal conductivity. However, with the evolution of technology and the increasing demand for high-performance devices, the need for better thermal solutions became evident. Today’s market offers a range of pastes, from those containing micronized silver particles suspended in a silicone/ceramic medium to those made almost entirely of liquid metal, boasting thermal conductivities in excess of 13 W/(m·K). However, it’s essential to note that while these high-conductivity pastes offer superior performance, they come with their own set of challenges, such as the risk of spillage and potential corrosion to certain metals like aluminum.

Top thermal paste brands of 2023

thermal pastes

The world of thermal pastes is vast, with a myriad of options available for those seeking to optimize their computer’s performance. These compounds play a crucial role in ensuring efficient heat transfer between the CPU and the cooler, thereby maintaining optimal temperatures for the system. Let’s delve into the top brands that have made a mark in 2023.

Thermal grizzly: Leading the pack

Thermal Grizzly has solidified its position in the market with offerings that cater to both enthusiasts and professionals. The brand’s Kryonaut paste stands out as a premium choice, boasting a thermal conductivity of 12.5 W/mk. Its non-electrically conductive nature ensures safety during application, and its ease of use has made it a favorite among system builders. With a price per gram of $9.99, it offers a balance between performance and cost. Moreover, its stability and resistance to drips make it a reliable choice for those seeking top-tier performance. According to Tom’s Hardware, the Kryonaut paste provides a smooth application process, ensuring efficient heat transfer.

Noctua: Reliability meets affordability

Noctua’s NT-H1 thermal paste has earned its reputation as a budget-friendly yet efficient solution. Priced at $2.26 per gram, it offers a compelling price-to-performance ratio. The paste’s viscosity ensures easy application and cleanup, making it suitable for a wide range of builds. Its performance is on par with some of the more expensive options in the market, making it a go-to choice for those seeking value without compromising on quality. Tom’s Hardware highlights its easy application process and the longevity it offers, ensuring that systems run cool for extended periods.

Arctic’s legacy: From MX-4 to MX-6

Arctic has been a mainstay in the thermal paste market, with its MX series garnering acclaim over the years. The MX-5, a premium paste known for its all-around performance, has been a favorite among enthusiasts. With a thermal conductivity of 6.0 W/mk and a price of $2.75 per gram, it offers a balanced solution for those seeking performance on a budget. Its carbon micro-particulate formulation ensures efficient heat transfer, while its consistency allows for easy application. However, as the MX-5 makes its exit, the newly launched MX-6 promises up to 20% better performance. As Tom’s Hardware notes, the MX-6 is set to carry forward the legacy of its predecessor, ensuring that Arctic remains a top choice for thermal solutions.

The choices available in the market cater to a range of needs, from those seeking budget solutions to enthusiasts looking for the best performance. As technology evolves, so do the offerings in the thermal paste market, ensuring that systems run efficiently and coolly. Whether you’re building a new system or upgrading an existing one, choosing the right thermal paste can make a significant difference in performance.

Factors to consider when choosing thermal pastes

thermal pastes

Thermal conductivity: The core metric

Thermal conductivity is the measure of a material’s ability to conduct heat. It’s the cornerstone of any thermal paste’s effectiveness. A higher thermal conductivity means the paste can transfer heat more efficiently from the CPU or GPU to the heatsink. According to data, some brands have managed to push the envelope, achieving thermal conductivities as high as 15 W/mK, while others hover around the 8-10 W/mK range. For online retailers, it’s essential to stock a variety of brands to cater to different customer needs, from those seeking top-tier performance to those on a budget.

Application and longevity

Applying thermal paste might seem straightforward, but there’s an art to it. A pea-sized amount in the center of the CPU, then pressing the cooler down, usually does the trick. However, some pastes require a specific application method to achieve optimal performance. Longevity is another crucial factor. Some thermal compounds can last up to eight years, ensuring consistent performance over time. Retailers should be aware of these nuances and offer guidance to their B2B clients, ensuring they make informed decisions.

Price vs. performance

There’s always a debate about whether it’s worth spending more on high-end thermal pastes. While premium brands often deliver superior performance, there are budget-friendly options that provide excellent value for their price. For instance, some $5 pastes perform nearly as well as their $20 counterparts. It’s all about finding the right balance. Retailers should offer a diverse range of products, ensuring they cater to both premium and budget-conscious clients.

Liquid metal compounds: The new frontier?

thermal pastes

Liquid metal compounds have been making waves in the thermal paste industry. These compounds, often composed of gallium and indium, boast incredibly high thermal conductivities, sometimes reaching 73 W/mK. However, they come with their set of challenges. Liquid metals can be corrosive, potentially damaging aluminum heatsinks. They also require careful application to avoid spillage. Despite these challenges, their performance benefits cannot be ignored. Retailers should consider stocking these but with clear guidelines on their application and potential risks.


The thermal paste market is ever-evolving, with innovations and trends shaping the industry. For online retailers, understanding these nuances is paramount. From the importance of thermal conductivity to the rise of liquid metal compounds, staying abreast of these developments ensures they provide the best products and advice to their B2B clientele. As 2023 unfolds, it’s clear that the demand for efficient and effective thermal solutions will only grow, making it an exciting time for those in the business.

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