Asus P5QLD PRO - Manual (Page 30)

2-8 Chapter 2: Hardware information
5. Position the CPU over the socket,
ensuring that the gold triangle is on
the bottom-left corner of the socket
then fit the socket alignment key
into the CPU notch.
Gold
triangle
mark
Alignment key
CPU notch
6. Apply several drops of Thermal
Interface Material to the exposed
area of the CPU that the heatsink will
be in contact with, ensuring that it is
spread in an even thin layer.
DO NOT eat the Thermal Interface Material. If it gets into your eyes or touches
your skin, ensure that you wash it off immediately, and seek professional
medical help.
Some heatsinks come with pre-
applied thermal paste. If so, skip
this step.
To prevent contaminating the paste, DO NOT spread the paste with your finger
directly.