Asus P5P800 SE P5P800 SE User's Manual for English Edition - Page 29

2.3.2 Installling the CPU heatsink and fan The Intel® Pentium® 4/Intel® Pentium® D LGA775 processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance. • Install the motherboard to the chassis before you install the CPU fan and heatsink assembly • When you buy a boxed Intel® Pentium® 4 processor, the package includes the CPU fan and heatsink assembly. If you buy a CPU separately, make sure that you use only Intel®-certified multi-directional heatsink and fan. • Your Intel® Pentium® 4 LGA775 heatsink and fan assembly comes in a push-pin design and requires no tool to install. 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 you install 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 four fasteners match the holes on the motherboard. Fastener Motherboard hole Make sure each fastener is oriented as shown, with the narrow groove directed outward. ASUS P5P800 SE 2-9