What is the correct application method for thermal grease after processor replacement?

The appropriate application method for thermal grease after processor replacement is to apply the correct amount evenly according to the manufacturer's instructions. This is vital because thermal grease, or thermal paste, facilitates optimal heat transfer between the CPU and the heatsink. Applying too much thermal grease can lead to it spilling over the edges, which may cause overheating by insulating rather than conducting heat. Conversely, applying too little can result in insufficient coverage, leading to poor thermal contact. Following specific instructions provided with the thermal compound ensures that the right quantity is used, promoting the effective functioning of the processor and preventing potential overheat issues.

In this context, the other options would not promote best practices for ensuring an efficient cooling solution for the CPU.