Heatsink compount or special heat pad. The reason for this is to form a tight thermal bond between the processor (CPU = Central Processing Unit) and heatsink for the best transfer of heat away from the CPU.
You have to apply a small layer of thermal grease or thermal paste before you install the heat sink on to the CPU. You can add it on either the heat sink or the CPU, I prefer the CPU.
Thermal grease to allow heat to transfer to the heat sink.
With a heat sink and fan.
what is the function of the heat sink fan? *well the CPU generates heat and in order for the CPU to remain in a safe temperature zone a haet sink is added on top of the CPU.
Air Compresser
It is important to double check the bottom of heat sink before attaching it to the CPU socket so as to ensure proper insulation. This one of the basic safety precautions in connecting a CPU.
Heatsinks and fans are used on CPUs to help cool them down so that they are not destroyed. A heatsink is a piece of metal placed on the CPU to distribute heat away from the CPU itself.
Thermal compound is usually applied to a CPU's heat sink to allow heat from the CPU to be transferred to the heat sink more effectively. The most commonly used brand by PC enthusiasts is Arctic Silver 5, a silver-based compound that transfers heat extremely well due to it's metallic base.
Heat sink and CPU
It transfers the heat between the two and it fills in the microscopic and not so microscopic bumps and valleys between the CPU and heat sink. That's why you only need just enough to fill the gap but not have too much in between.
It helps conduct heat away from the object on which it is placed. Without the heat sink, a computer CPU would get too hot to function.
Its called a heat sink
nothig rely people say its dangrous but it not