Lenovo 5458 Installation And Service Manual page 192

v When you install or remove DIMMs, the server configuration information
v The server supports only industry-standard double-data-rate 3 (DDR3), 1333 or
v The server supports a maximum of four single-rank or dual-rank unbuffered
v The maximum operating speed of the server is determined by the slowest
v If you install a pair of DIMMs in DIMM connectors 1 and 3, the size and speed
v You can use compatible DIMMs from various manufacturers in the same pair.
v The specifications of a DDR3 DIMM are on a label on the DIMM, in the
v gGB eRxf PC3v-wwwwwm-aa-bb-cc
176
System x3250 M5 Type 5458: Installation and Service Guide
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed. You can use the Setup
utility to view the server configuration information, see "Using the Setup utility"
on page 90 for more information.
1600 MHz, PC3L-12800 (single-rank or dual-rank), unbuffered or synchronous
dynamic random-access memory (SDRAM) dual inline memory modules
(DIMMs) with error correcting code (ECC).
DIMMs.
DIMM in the server.
of the DIMMs that you install in DIMM connectors 1 and 3 must match each
other. However, they do not have to be the same size and speed as the DIMMs
that are installed in DIMM connectors 2 and 4.
following format.
where:
– gGB is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
– eR is the number of ranks
- 1R = single-rank
- 2R = dual-rank
- 4R = quad-rank
– xf is the device organization or bit width (for example, x4, x8, or x16)
- x4 = x4 organization (4 DQ lines per SDRAM)
- x8 = x8 organization
- x16 = x16 organization
– v is the SDRAM and support component supply voltage (VDD)
- Blank = 1.5 V specified
- L = 1.35 V specified, 1.5 V operable
Note: Values for these voltages are 'specified' which means the device
characteristics such as timing are supported at this voltage. Values are
'operable' which means that the devices can be operated safely at this
voltage. However, device characteristics such as timing may not be
guaranteed. All devices must be 'tolerant' of the highest DDR3 nominal
voltage of 1.5 V, meaning that they may not operate at 1.5 V but may be
powered at that voltage without damage to the devices.
- wwwww is the DIMM bandwidth, in MBps
v 6400 = 6.40 GBps (DDR3-800 SDRAMs, 8-byte primary data bus)
v 8500 = 8.53 GBps (DDR3-1066 SDRAMs, 8-byte primary data bus)
v 10600 = 10.66 GBps (DDR3-1333 SDRAMs, 8-byte primary data bus)
v 12800 = 12.80 GBps (DDR3-1600 SDRAMs, 8-byte primary data bus)
- m is the DIMM type
v E = Unbuffered DIMM (UDIMM) with ECC (x72-bit module data bus)