Memory configuration

Memory performance depends on several variables, such as memory mode, memory speed, memory ranks, memory population and processor.

Information about optimizing memory performance and configuring memory is available at the Lenovo Press website:

Memory - Lenovo Press

In addition, you can take advantage of a memory configurator, which is available at the following site:

Lenovo Enterprise Solutions Configurator

Specific information about the required installation order of memory modules in your compute node based on the system configuration and memory mode that you are implementing is shown below.

Figure 1. DIMM and processor location
DIMM location

Table 1. DIMM and processor location
`1` DIMM connectors 13–18	`4` Processor socket 1
`2` Processor socket 2	`5` DIMM connectors 7–12
`3` DIMM connectors 1–6	`6` DIMM connectors 19–24

Table 2. Channel and slot information of DIMMs around processor 1 and 2.
The memory-channel configuration table is a three-column table that shows the relationship between the processors, memory controllers, memory channels, slot number and the DIMM connectors.
Integrated Memory Controller (iMC)	Controller 0						Controller 1
Channel	Channel 2		Channel 1		Channel 0		Channel 0		Channel 1		Channel 2
Slot	0	1	0	1	0	1	1	0	1	0	1	0
DIMM connector (processor 1)	1	2	3	4	5	6	7	8	9	10	11	12
DIMM connector (processor 2)	24	23	22	21	20	19	18	17	16	15	14	13

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