Installing A Memory Module - IBM System x3650 M5 Installation And Service Manual

Figure 93. DIMM removal
6. If you are instructed to return the DIMM, follow all packaging instructions, and
use any packaging materials for shipping that are supplied to you.

Installing a memory module

The following notes describe the types of DIMMs that the server supports and
other information that you must consider when you install DIMMs.
v When you install or remove DIMMs, the server configuration information
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
v The server supports only industry-standard double-data-rate 4 (DDR4), 1600,
1866, or 2133 MHz, PC4-12800, PC4-14900, or PC4-17000 registered or load
deduction, synchronous dynamic random-access memory (SDRAM) dual inline
memory modules (DIMMs) with error correcting code (ECC). See
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/ for a
list of supported memory modules for the server.
– The specifications of a DDR4 DIMM are on a label on the DIMM, in the
following format.
ggggg eRxff PC4v-wwwwwm-aa-bb-ccd
where:
- ggggg 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
- xff is the device organization (bit width)
x4 = x4 organization (4 DQ lines per SDRAM)
x8 = x8 organization
x16 = x16 organization
- v is the SDRAM and support component supply voltage (VDD)
v Blank = 1.2 V specified
- wwwww is the DIMM bandwidth, in MBps
Chapter 5. Removing and replacing components
167