Asus P5QL - Manual (Page 29)

ASUS P5QL 2-7
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.
The CPU fits in only one correct
orientation. DO NOT force the
CPU into the socket to prevent
bending the pins on the socket
and damaging the CPU!