Asus AP120-E1 - Manual (Page 33)

ASUS P4P800S-E motherboard user guide 2-7
2.4.3 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.
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.
Follow these steps 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.
When you buy a boxed Intel ® Pentium ® 4 Processor, the package includes the
heatsink, fan, and retention mechanism.
In case you buy a CPU separately, make sure that you use only Intel certified
heatsink and fan.
Your boxed Intel ® Pentium ® 4 Processor package should come with installation
instructions for the CPU, heatsink, and the retention mechanism. If the
instructions in this section do not match the CPU documentation, follow the
latter.
Retention Module Base
CPU Heatsink