Installing
a
second
microprocessor
The
computer
supports
a
second
microprocessor,
on
its
own
microprocessor
board,
with
its
own
memory
modules.
Note:
When
installing
options,
you
might
find
it
easier
to
work
with
the
computer
lying
on
its
side.
The
following
notes
describe
information
that
you
must
consider
when
installing
a
second
microprocessor
in
the
computer.
v
The
speed
of
microprocessors
1
and
2
must
match.
v
The
microprocessor
option
kit
comes
with
a
microprocessor
board,
a
microprocessor
socket,
the
microprocessor,
a
fan
sink,
and
a
microprocessor
air
baffle.
The
necessary
screws
and
the
microprocessor
socket
are
preinstalled
on
the
microprocessor
board.
v
Each
microprocessor
contains
a
memory
controller
for
the
memory
modules
that
are
associated
with
it.
v
You
must
install
at
least
one
pair
of
matched
DIMMs
on
the
microprocessor
board
with
the
microprocessor.
The
DIMMs
in
each
pair
must
be
the
same
size,
speed,
type,
and
technology
as
each
other
but
do
not
have
to
match
other
pairs.
See
“Replacing
memory
modules”
on
page
45
for
information
about
the
installation
order
and
the
type
of
DIMMs
that
are
supported.
v
With
more
than
one
microprocessor,
the
computer
can
operate
as
a
symmetric
multiprocessing
(SMP)
computer.
With
SMP,
certain
operating
systems
and
application
programs
can
distribute
the
processing
load
among
the
microprocessors.
This
enhances
performance
for
database
and
other
applications.
v
To
use
SMP,
obtain
an
SMP-capable
operating
system.
For
a
list
of
supported
operating
systems,
go
to
http://www.ibm.com/pc/us/compat/.
v
Read
the
documentation
that
comes
with
the
microprocessor
to
determine
whether
you
need
to
update
the
computer
basic
input/output
system
(BIOS)
code.
The
most
current
level
of
BIOS
code
for
the
computer
is
available
from
http://www.ibm.com/pc/support/.
v
For
a
list
of
supported
microprocessor
options
for
the
computer,
go
to
http://www.ibm.com/pc/;
then,
select
your
country
and
navigate
to
the
list
of
options
for
the
computer
Before
you
begin,
obtain
the
following
items:
v
A
Phillips-head
screwdriver
v
A
flat-blade
screwdriver
or
a
nut
driver
Complete
the
following
steps
to
install
a
second
microprocessor.
Note:
For
clarity,
the
illustrations
in
this
procedure
show
only
the
system
board.
You
will
not
remove
the
system
board
from
the
computer
to
perform
this
procedure.
1.
Read
the
safety
information
in
Appendix
B,
“Safety
information,”
on
page
117,
and
the
guidelines
in
“Handling
static-sensitive
devices”
on
page
25.
2.
Turn
off
the
computer
and
all
attached
devices
(see
“Turning
off
the
computer”
on
page
5).
3.
Disconnect
all
external
cables
and
power
cords;
then,
remove
the
side
cover
(see
“Replacing
the
side
cover”
on
page
27)
4.
Remove
the
support
bracket
(see
“Replacing
the
support
bracket”
on
page
29).
48
IntelliStation
A
Pro
Type
6224:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
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