Lenovo System x3550 M5 Product Manual page 12

Part Feature
number codes*
00MU402 ASCN / ASCZ
00KA076 A5BM / A5C1
00MU403 ASCP / ASD0
00MU404 ASCQ / ASD1
00MU405 ASCR / ASD2
00KF584 ARZ8 / ARZ9
* The first feature code is for the first processor; the second feature code is for the second processor.
Memory
System x3550 M5 supports TruDDR4 Memory. TruDDR Memory uses the highest-quality components
sourced from Tier 1 DRAM suppliers and only memory that meets our strict requirements is selected. It is
compatibility tested and tuned on every System x server to maximize performance and reliability. TruDDR4
Memory will have a unique signature programmed into the DIMM, which will enable System x servers to
verify whether the memory installed is qualified/supported. Because TruDDR4 Memory is authenticated,
certain extended memory performance features can be enabled to extend performance over industry
standards. From a service and support standpoint, System x memory automatically assumes the system's
warranty, and service and support provided worldwide.
The server supports up to 12 DIMMs when one processor is installed and up to 24 DIMMs when two
processors are installed. Each processor has four memory channels, and there are three DIMMs per
channel.
The following rules apply when selecting the memory configuration:
The server supports RDIMMs and LRDIMMs.
Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.
The maximum quantity of DIMMs that can be installed in the server depends on the number of
processors.
All DIMMs in the server operate at the same speed, which is determined as the lowest value of the
following speeds:
Memory speed that is supported by the specific processor.
Lowest of maximum operating speeds for selected memory configuration that depends on
quantity of DIMMs per channel, as shown under "Maximum operating speed" in Table 5.
The following memory protection technologies are supported:
ECC
Chipkill (for x4-based memory DIMMs)
Chipkill works only in independent channel mode (the default operational mode) and supports only x4-
based memory DIMMs.
Lenovo System x3550 M5
Description
Intel Xeon Processor E5-2685 v3 12C 2.6GHz 30MB 2133MHz 120W
Intel Xeon Processor E5-2690 v3 12C 2.6GHz 30MB 2133MHz 135W
Intel Xeon Processor E5-2695 v3 14C 2.3GHz 35MB 2133MHz 120W
Intel Xeon Processor E5-2697 v3 14C 2.6GHz 35MB 2133MHz 145W
Intel Xeon Processor E5-2698 v3 16C 2.3GHz 40MB 2133MHz 135W
Intel Xeon Processor E5-2699 v3 18C 2.3GHz 45MB 2133MHz 145W
Standard
models
where
used
-
L2x
-
N2x
-
M2x
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