IBM System x3300 M4 - Page 81

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).
v Do not install registered and unbuffered DIMMs in the same server.
v 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.
v 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.
v The DIMM options that are available for the server are 2 GB, 4 GB, 8 GB, 16 GB,
and 32 GB (when available).
Note: While installing 16 GB 1.5 Volt/ 32 GB 1.35 Volt, please refers to the table
of fan configuration instruction.
Table 6. Fan configuration instruction
Fans Conditions
2 and
Rear
fan
Standard for all systems
3
1. When the second microprocessor is populated, the fan is included in the
second microprocessor kit, P/N: 00D2581 ~ 00D2589. Or
2. When more than 2 PCI-e adapters have been installed on the system, the fan
(P/N: 00D2593) will be available separately.
1 Optional redundant fan (P/N: 00D2593)
Attention: When fan 3 is installed and 16 GB 1.5V / 32 GB 1.35V DIMMs are
installed, fan 1 must also be populated.
v The server system board supports a minimum of 2 GB and a maximum of 96 GB
of system memory.
Note: The amount of usable memory is reduced depending on the system
configuration. A certain amount of memory must be reserved for system
Chapter 2. Installing optional devices 63