Lenovo x3300 M4 7382 Installation And Service Manual page 273

– 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
– x ff is the device organization or bit width (for example, x4, x8, or x16)
4 = x4 organization (4 DQ lines per SDRAM)
8 = x8 organization
16 = x16 organization
– wwwww is the DIMM bandwidth, in MBps
8500 = 8.53 GBps (DDR3-1066 SDRAMs, 8-byte primary data bus)
10600 = 10.66 GBps (DDR3-1333 SDRAMs, 8-byte primary data bus)
12800 = 12.80 GBps (DDR3-1600 SDRAMs, 8-byte primary data bus)
14900 = 14.93 GBps (DDR3-1866 SDRAMs, 8 byte primary data bus)
17000 = 17.06 GBps (DDR3-2133 SDRAMs, 8 byte primary data bus)
– m is the DIMM type
E = Unbuffered DIMM (UDIMM) with ECC (x72-bit module data bus)
R = Registered DIMM (RDIMM)
U = Unbuffered DIMM with no ECC (x64-bit primary data bus)
– aa is the DDR3 SDRAM CAS latency, in clocks at maximum operating frequency
– bb is the JEDEC SPD Revision Encoding and Additions level
– cc is the reference design file for the design of the DIMM
– d is the revision number of the reference design of the DIMM
Note: To determine the type of a DIMM, see the label on the DIMM. The information on the label is in the
format xxxxx nRxxx PC3-xxxxx-xx-xx-xxx. The numeral in the sixth numerical position indicates whether
the DIMM is single-rank (n=1) or dual-rank (n=2).
• Do not install registered and unbuffered DIMMs in the same server.
• The server supports 1.35-volt (low-voltage) and 1.5-volt DIMMs. Do not install a 1.35-volt and 1.5-volt
DIMM in the same server.
• The server supports a maximum of 12 DIMMs (single-rank, dual-rank, or quad-rank) on the system board.
If you mix single-rank, dual-rank, or quad-rank DIMMs in the server, quad-rank DIMMs must be installed
first. When one quad-rank DIMM is installed, it must be installed in DIMM slot 1.
• The DIMM options that are available for the server are 2 GB, 4 GB, 8 GB, 16 GB, and 32 GB (when
available).
Notes: While installing 16 GB 1.5 Volt/ 32 GB 1.35 Volt, please refers to the table of fan configuration
instruction.
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Chapter 6 Removing and replacing components
261