IBM PC Server 325, User Handbook Manual

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Working with Microprocessor Upgrades
Working with Microprocessor Upgrades
When you install an additional microprocessor, your PC Server 325
can operate as a symmetric multiprocessing (SMP) server. With
SMP, certain operating systems and application programs can
distribute the processing load between microprocessors. This
enhances performance for database and point-of-sale applications,
integrated manufacturing solutions, and other applications that use
multiple, simultaneous threads.
Installing Microprocessor Upgrades
The microprocessor upgrade comes with a voltage regulator module
(VRM) and a heat sink with an integrated fan (fan sink). The VRM
plugs into a connector on the processor board. Because each
microprocessor has specific power and voltage requirements, be sure
to use the VRM that comes with the microprocessor.
Before you begin
Ÿ
Read “Electrical Safety” on page 53 and “Handling
Static-Sensitive Devices” on page 54.
Ÿ Read the instructions that come with the microprocessor
upgrade.
Ÿ Turn off the server.
Ÿ
Disconnect all external cables and power cords, and then
remove the server cover (see “Preparing to Add Options” on
page 55).
Ÿ Obtain an SMP operating system (optional). For a list of
supported operating systems, see
http://www.pc.ibm.com/servers/ on the World Wide Web.
Attention:
Ÿ If you install an additional microprocessor that is different from
the currently installed microprocessor, your server operation
might become unreliable. To prevent this, use a microprocessor
with the same internal and external clock speed, and the same
cache size as those of the currently installed microprocessor.
Microprocessor internal and external clock frequencies and
cache size must be identical.
Chapter 3. Installing Options
97