Installing Options 5-21
PROCESSOR UPGRADE
The zero-insertion force (ZIF) socket accepts a modified
staggered pin-grid-array (SPGA) processor, along with a
programmable voltage regulator for the CPU core. It
provides you with a performance upgrade path to Pentium
Pro OverDrive technology. The voltage regulator
programming is automatic and controlled by the VID pins
of the processor.
!
CAUTION
Incorrect installation of the processor can damage
the processor, system board, or both. Follow the
installation instructions carefully.
The system requires a heatsink on the OverDrive
processor. Verify that you have the correct heatsink
for the processor.
When upgrading the processor, first remove the processor
currently installed in the system, then install the OverDrive
processor.
Removing the Processor
Remove the processor installed on the system board as
follows.
1.
Remove the system unit cover.
2.
Locate the processor socket (see the figure “System
board sockets and connectors” earlier in this chapter).
If any expansion boards are obstructing the socket,
remove the boards.
3.
Release the heatsink clip from the tabs on the socket.