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Socket 478 Processors

Socket 478 is used by the older Pentium 4 and Celeron socket 478 models. The process of applying thermal paste to those processors is similar to the process for socket 754 and 939 processors.

First make sure the processor surface is completely clean and free from dirt as well as remains of thermal paste from past applications. See Figure 28.

Thermal GreaseFigure 28: Checking if the processor surface is clean

Using a small spatula (which can be made by cutting a piece of the hard transparent plastic from the processor box), apply some thermal paste on the center of the processor. Don’t worry about covering the whole processor area because the cooler pressure will make it uniform. See Figures 29 and 30.

Thermal GreaseFigure 29: Applying the thermal paste

Thermal GreaseFigure 30: Thermal grease correctly applied; the arrows show the loops for installing the CPU cooler

The next step is to install the cooler over the processor.

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Daniel Barros lives in Brazil and used to be our motherboard reviewer. He is a partner at a local PC sales and maintenance store.