10 Best Thermal Pastes 2025 in the United States

The Thermal Grizzly Kryonaut Extreme thermal paste stands out for its exceptional thermal conductivity at 14.2 W/(m·K), making it a top choice for gamers and overclocking enthusiasts who demand peak performance from their CPUs and GPUs. This high thermal transfer rate ensures that heat is effectively dissipated, which is crucial during intensive gaming or demanding applications. Users can expect impressive results, including lower operating temperatures and a quieter system due to reduced fan speeds.

In terms of application, Kryonaut is user-friendly. It comes with a syringe and an applicator designed for precise distribution, making it easier even for those who might not be familiar with thermal paste application. Additionally, the paste is stable at high temperatures, remaining effective in environments up to 80 degrees Celsius, which ensures longevity and consistent performance over time.

It's important to note that while Kryonaut is indeed high-performing, it may be overkill for casual users who do not overclock their systems or run resource-intensive applications. For everyday computers, there are other thermal pastes that might suffice and come at a lower price point. Furthermore, with only 2 grams per syringe, it is designed for multiple applications (up to 12 CPUs), but this might not be enough for larger or more complex setups, potentially requiring more frequent purchases for heavy users. Kryonaut Extreme is an excellent choice for those who prioritize thermal performance and are looking to enhance their system's cooling efficiency, but casual users might find it more than they need.

The Noctua NT-H2 3.5g AM5 Edition is a high-quality thermal compound designed specifically for AMD AM5 CPUs. This product excels in thermal conductivity, meaning it effectively transfers heat from your CPU to the heatsink, which could help in maintaining optimal operating temperatures for your computer. Its second-generation formulation enhances the already award-winning NT-H1, ensuring improved performance.

The inclusion of a thermal paste guard is a thoughtful feature for users, as it helps prevent paste build-up in the cut-outs of the heatspreader, which can be a common issue with some thermal pastes. This adds to the ease of use, making application straightforward without the need for spreading the paste manually. The product also comes with three cleaning wipes, making it convenient to clean off any residue during reapplications.

One of the significant strengths of the Noctua NT-H2 is its longevity and stability, with a recommended usage time on the CPU of up to 5 years and a storage time of up to 3 years. This means you won't need to frequently reapply it, saving both time and effort. However, while it performs exceptionally well in thermal transfer, it may be on the pricier side compared to some other options available. Additionally, the 3.5g pack size might be a bit limiting for extensive multiple applications on larger CPUs like TR4, though it should suffice for smaller ones. This product is particularly well-suited for those using AMD AM5 CPUs and seeking reliable, long-term thermal management without the hassle of frequent reapplications.

Thermal Grizzly Kryonaut is a high-performance thermal paste that excels in thermal conductivity, boasting an impressive 12.5W rating. This makes it ideal for demanding applications such as overclocking and industrial cooling systems. Its ease of application is a notable strength, thanks to the specially designed syringe and spatula, which ensures precise and comfortable paste distribution on CPUs, GPUs, and gaming consoles like PS4, PS5, and Xbox.

Another significant advantage is its longevity; the paste does not dry out even at high temperatures (up to 80°C), ensuring sustained performance over time. Users can expect a noticeable reduction in device temperatures right from the first use, enhancing operational comfort and efficiency. Kryonaut is also widely recognized as a market leader, highly rated by customers and praised for its quality standards. It has a high customer review rating of 4.7 out of 5 stars, indicating strong user satisfaction.

One potential drawback is its partial compatibility with some heat sinks, which may require users to check their specific hardware before purchase. Additionally, being a high-performance paste, it may be overkill for standard computing needs, making it more suited for enthusiasts and professionals who require top-tier cooling solutions.