Asus P4GPL-X Motherboard DIY Troubleshooting Guide - Page 22

1.6.3 Installing the heatsink and fan The Intel® Pentium® 4 Processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance. • When you buy a boxed Intel® Pentium® 4 processor, the package includes the heatsink, fan, and retention mechanism. • If you buy a CPU separately, make sure that you use only Intel®-certified heatsink and fan. If you purchased a separate CPU heatsink and fan assembly, make sure that a Thermal Interface Material is properly applied to the CPU heatsink or CPU before installing the heatsink and fan assembly. To install the CPU heatsink and fan: 1. Place the heatsink on top of the installed CPU, making sure that the heatsink fits properly on the retention module base. • The retention module base is already installed on the motherboard upon purchase. • You do not have to remove the retention module base when installing the CPU or installing other motherboard components. CPU heatsink Retention module base 1-12 Chapter 1: Product introduction