High-performance thermal paste is used to improve the connection between your CPU and the heat sink, enabling better heat dissipation. This ensures your system operates at the correct temperatures, which is important for longevity and performance. It also helps to prevent erratic circuit operation or failure due to overheating. The best thermal grease for PCs is designed to be non-conductive and will not interfere with your motherboard or other components.

The Noctua NT-H1 is an industry standard and well regarded as one of the top thermal pastes available. The 3.5g pack provides enough for three to 20 applications, depending on your CPU size. The NT-H1 is non-corrosive and has a nice consistency that makes it easy to apply. It's also compatible with a wide range of CPUs and GPUs.

Another great option is the Cooler Master MasterGel Pro V2, a high-performance paste that offers consistent temperature drops and easy application. It's an excellent choice for PC enthusiasts and gamers that want to upgrade their pre-installed paste to a better option.

Liquid metal compounds such as the CoolLaboratory Liquid Ultra and the Thermal Grizzly Conductonaut are another type of TIM that offers superior performance. However, they're electrically conductive and could damage your hardware if they get splashed in the wrong place. Additionally, they can be difficult to remove and may corrode aluminum surfaces.

The Easycargo 6.5 W/m-K is an economical option with decent thermal properties. The syringe kit comes with ten 1 gram syringes, which is plenty for most applications. It has a nice consistency and spreads evenly, making it easy to apply with minimal mess. The syringe also features a precision applicator tip to help with application accuracy.