Thermal paste is designed to improve the transfer of heat from a CPU/GPU to the cooler by filling in microscopic roughness and air gaps between the two surfaces. This increases the surface area available for heat dissipation, lowering operating temperatures and reducing the risk of overheating.
Non-conductive thermal pastes do not conduct electricity, avoiding the risk of electrical shorts which could damage your components. They also have a lower coefficient of thermal expansion, making them easier to apply than conductive alternatives.
One of the most important factors when selecting a non-conductive thermal paste is its longevity. A good thermal paste will maintain its performance for an extended period of time, minimizing the need for reapplication and saving you money in the long run.
A good thermal paste must be easy to apply, with a smooth texture that spreads evenly and quickly. It should also be stable, retaining its integrity for thousands of hours without drying out or flaking. Finally, it should provide excellent performance on both air and liquid cooling systems, ensuring optimal heat transfer for your system.
Among non-conductive thermal pastes, the Kryonaut from Thermal Grizzly stands out for its exceptional thermal conductivity and ease of application. However, some users have found that it has a tendency to dry out over time, making it necessary to reapply frequently. Other popular options include Noctua NT-H1 and Arctic MX-5, both of which offer great longevity.