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The most critical aspect of installation is for
the heatsink to be securely mounted. The more firmly it is installed, the
better the contact between the heatsink's base and the CPU itself. It's also
less likely to fall off. Ease of installation is also important a simple
mounting scheme means less time spent installing, and a reduced likelihood
of screwing up.
A notch in the center of the mounting plate acts as a guide for the
AMD mounting clip. On most AMD motherboards the CNPS9900 will point
in the "proper" east-west orientation, blowing toward the
rear exhaust inside a typical ATX case.
LGA775 installation is a more involved process requiring a plastic plate
to be attached to the back-side of the motherboard. A retention module
is then mounted on the top-side of the board with four long screws that
secure it to the backplate. Finally a metal mounting frame with integrated
spring-loaded bolts is slipped over the heatsink and and screwed into
the retention module.
The thickness and curvature of the back-side of the cooler makes tightening
two of the bolts difficult. A screwdriver has to be inserted at an angle
to get access.
Fully installed on our LGA775 test platform.
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