Adding
or
changing
system
memory
There
are
8
DIMM
slots
for
system
memory.
Each
IBM
PowerXCell
8i
processor
has
two
memory
channels
and
there
are
two
DIMM
slots
per
memory
channel.
You
can
use
VLP
DDR2
1
GB,
2
GB,
or
4
GB
memory
modules.
The
maximum
memory
configuration
has
a
4
GB
memory
module
in
each
DIMM
slot
which
provides
16
GB
to
each
processor
and
32
GB
in
total.
As
shown
in
Figure
14,
each
processor
has
a
channel
0
and
a
channel
1,
with
a
pair
of
DIMM
slots
for
each
channel.
To
use
a
channel,
you
must
populate
both
DIMM
slots
that
belong
to
the
channel.
All
DIMM
configuration
listed
in
Table
2
are
supported
by
the
latest
firmware
level.
Table
2.
Supported
DIMM
configurations
IBM
PowerXCell
8i-0
IBM
PowerXCell
8i-1
Channel
0
Channel
1
Channel
0
Channel
1
Slot
1
Slot
2
Slot
3
Slot
4
Slot
5
Slot
6
Slot
7
Slot
8
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
2
GB
2
GB
1
GB
1
GB
4
GB
4
GB
2
GB
2
GB
1
GB
1
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
4
GB
4
GB
4
GB
4
GB
1
GB
1
GB
4
GB
4
GB
2
GB
2
GB
4
GB
4
GB
4
GB
4
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
1
GB
2
GB
2
GB
2
GB
2
GB
1
GB
1
GB
1
GB
1
GB
4
GB
4
GB
4
GB
4
GB
2
GB
2
GB
2
GB
2
GB
1
GB
1
GB
1
GB
1
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
2
GB
4
GB
4
GB
4
GB
4
GB
4
GB
4
GB
4
GB
4
GB
1
GB
1
GB
1
GB
1
GB
1
DIMM 1 slot
DIMM 2 slot
DIMM 3 slot
DIMM 4 slot
DIMM 5 slot
DIMM 6 slot
DIMM 7 slot
DIMM 8 slot
Processor 0 channel 0
Processor 0 channel 1
Processor 1 channel 0
Processor 1 channel 1
Figure
14.
System
memory
DIMM
slot
locations
Chapter
4.
Installing
and
removing
replaceable
units
39
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