Asus Z7S WS - Manual (Page 34)

2-12 Chapter 2: Hardware information
The Intel ® Xeon™ processors require an Intel certified heatsink and fan assembly
to ensure optimum thermal condition and performance.
When you buy a boxed Intel CPU, the package includes the heatsink, fan,
retention brackets, screws, thermal grease, installation manual, and other items
that are necessary for CPU installation.
2.3.2. Installing.the.CPU.heatsink.and.fan
• Make sure that you have applied the thermal grease to the top of the CPU
before installing the heatsink and fan.
• Refer to the installation manual that came with the CPU package for details
on heatsink/fan assembly and installation.
CPU heatsink (top view) CPU heatsink (bottom view)
Heatsink.screw
To install the CPU heatsink and fan:
1. Place the heatsink on top of the
installed CPU, making sure that the
four screws on the heatsink align
with the nuts on the support plate.