Overdrive Processor Installation - NEC POWERMATE P60D Service Manual

OverDrive Processor Installation

The zero-insertion force (ZIF) pin-grid array (PGA)/OverDrive socket accepts processors.
Once the currently installed processor is removed from the socket, the next generation
OverDrive Processor can be installed. The procedure is the same for installing a OverDrive
processor into the PGA/OverDrive socket for both the desktop and minitower systems.
The Pentium processor has a math coprocessor built into the microprocessor and can be
upgraded by replacing the processor with the next generation OverDrive processor.
Install a OverDrive processor into the system board as follows.
1. Remove the top cover and any expansion boards covering the PGA/OverDrive
socket as previously described.
2. Locate the PGA/OverDrive socket on the system board (see Figure Section 3-18).
3. Lift the PGA/OverDrive socket lever (shown in Figure Section 3-20) all the way
back and remove the processor currently installed.
Figure Section 3-20 PGA/OverDrive Socket Lever
CAUTION: Heatsinks are required for micro-
processors, math coprocessors, and OverDrive
processors installed in the systems.
Heatsinks are available through NEC.
Lever
Options 3-11