Installing Memory Modules - IBM IntelliStation M Pro 6220 User Manual

Installing memory modules

The following notes describe the types of dual inline memory modules (DIMMs) that
your computer supports and other information that you must consider when
installing DIMMs.
Notes:
1. When you restart the computer after adding or removing a DIMM, the computer
2. Your IntelliStation M Pro Type 6220 computer uses industry-standard, PC2700
3. The system board contains four DIMM connectors and supports two-way
4. The DIMM options available for your computer are 256 MB, 512 MB, and 1 GB
5. The amount of usable memory will be reduced depending on the system
6. Your computer comes with either one or two 256 MB, 512 MB, or 1 GB memory
7. DIMMs must be installed in matched pairs. The first pair of DIMMs you install in
8. Install only 2.5 V, 184-pin, double-data-rate (DDR) 333 or 400, PC2700 or
Complete the following steps to install a DIMM:
additional hard disk drive, you must change the switch or jumper setting on
the CD-ROM drive to make the drive a subordinate device, set the switch or
jumper setting on the new drive to master, and change the connector used for
the CD-ROM drive to the gray middle connector. The new drive will be
connected to the black master IDE device connector.
– Serial ATA: The narrower, black signal cable has two connectors. One is
attached to the serial ATA drive, and the other is attached to the connector on
the system board. Each serial ATA drive comes with a cable. If you install an
additional serial ATA drive, you will need an additional cable.
displays a message that the memory configuration has changed.
or PC3200 double-data-rate (DDR) dual inline memory modules (DIMMs).
memory interleaving.
memory modules . Your computer supports a minimum of 256 MB and a
maximum of 4 GB of system memory.
configuration. A certain amount of memory must be reserved for system
resources. The BIOS will display the total amount of installed memory and the
amount of configured memory.
DIMMs installed. If your computer has one DIMM installed, when you install an
additional DIMM, it must be installed in DIMM 3 memory connector and must be
the same size, speed, type, and technology as the DIMM installed in DIMM 1
memory connector. You can mix compatible DIMMs from various manufacturers.
When one DIMM is installed in the computer, the computer runs as a
single-channel computer. When you add a DIMM in DIMM 3 memory connector,
your computer defaults to a dual-channel computer.
DIMM 1 and DIMM 3 memory connectors must be the same size, speed, type,
and technology. You can mix compatible DIMMs from various manufactures. If
you install a second pair of DIMMs in DIMM 2 and DIMM 4 memory connectors,
they do not have to be the same size, speed, type, and technology as the
DIMMs installed in DIMM 1 and DIMM 3 memory connectors. However, the size,
speed, type, and technology of the DIMMs you install in DIMM 2 and DIMM 4
memory connectors must match each other.
PC3200, unbuffered synchronous dynamic random-access memory (SDRAM)
with error correcting code (ECC) DIMMs. These DIMMs must be compatible
with the latest PC2700 or PC3200 SDRAM unbuffered DIMM specification. For
a list of supported options for your computer, go to http://www.ibm.com/pc/;
then, select your country and navigate to the list of options for your computer.
Chapter 4. Installing options
45