Installing System Board Options 6-5
Table 6-1 lists sample memory configurations and shows
valid DIMM combinations and socket placement for each
configuration.
.
Performing a Memory Upgrade
Follow this procedure to perform a memory upgrade:
1. Remove the computer cover according to the
instructions in “Removing the Computer Cover”
in Chapter 5.
2. Rotate the p ower supply out of the way according
to the instructions in “Rotating the Power Supply
Away From the System Board” in Chapter 5.
3. Determine the DIMM sockets into which you will
install DIMMs or replace existing DIMMs.
See Figure 6-1 and Table 6-1.
4. Install or replace DIMMs as necessary to reach
the desired memory total.
Follow the instructions in “Installing a DIMM” or
Removing a DIMM,” as appropriate, found later in
this section.
5. Rotate the power supply back into the computer
chassis.
6. Replace the computer cover; reconnect your com-
puter and peripherals to their power sources, and
turn them on.
After the system completes the power-on self-test
(POST) routine, the system runs a memory test that
displays the total memory of all installed DIMMs,
including those you just installed.
NOTE: If the memory total is incorrect, turn off your
computer and peripherals and disconnect them from
their power sources, remove the computer cover, and
make sure that the installed DIMMs are seated prop-
erly in their sockets. Then repeat this step.
The system detects that the new memory does not
match the existing system configuration information,
which is stored in nonvolatile random-access memory
(NVRAM), and generates the following message:
The amount of system memory has
changed.
Strike the F1 key to continue, F2 to
run the setup utility

Table 6-1. Sample DIMM Configuration Options

Total
Desired
Memory
DIMM Socket
ABC
16 MB 16 MB
32 MB 16 MB 16 MB
32 MB 32 MB
48 MB 16 MB 16 MB 16 MB
48 MB 32 MB 16 MB
64 MB 64 MB
64 MB 32 MB 32 MB
80 MB 32 MB 32 MB 16 MB
80 MB 64 MB 16 MB
96 MB 32 MB 32 MB 32 MB
96 MB 64 MB 16 MB 16 MB
112 MB 64 MB 32 MB 16 MB
128 MB 64 MB 64 MB
128 MB 128 MB
144 MB 64 MB 64 MB 16 MB
144 MB 128 MB 16 MB
160 MB 128 MB 32 MB
192 MB 128 MB 64 MB
192 MB 128 MB 32 MB 32 MB
256 MB 128 MB 128 MB
320 MB 128 MB 128 MB 64 MB
384 MB 128 MB 128 MB 128 MB
CAUTION: See “Protecting Against Electro-
static Discharge” in the safety instructions at
the front of this guide.