Thermal Pastes
Thermal pastes are electrically conductive compounds that are used to fill the space between a heat sink and a CPU. The paste helps to improve the thermal contact between the two surfaces and dissipate heat away from the CPU. Thermal pastes are typically made from a metal oxide or metal powder and a silicone or polymer binder.

What is a Thermal Paste? How It Works, Types, Functions, FAQs, and More!
What is a thermal paste? This a solution that avoids that your processor overheats. It's more useful than you think.