Asus KFN5-D SLI - Manual (Page 30)

2-10 Chapter 2: Hardware information
2.3.3 Installing the heatsink and fan
The AMD Opteron™ processors require a specially designed heatsink and
fan assembly to ensure optimum thermal condition and performance.
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.
Retention Module Base
CPU Heatsink
CPU Fan
Retention bracket lock Retention bracket
• The retention module base and CPU back plane are 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.
• 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.
Your boxed CPU heatsink and fan assembly 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.
Make sure that you use only qualified heatsink and fan assembly.