Technical Product Specification

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Product Architecture Overview Intel

Server Board S2400EP TPS

Intel order number G50763-002 Revision 2.0

3.2.2.2 Memory Slot Identification and Population Rules

Note: Although mixed DIMM configurations may be functional, Intel

only performs platform

validation on systems that are configured with identical DIMMs installed.

Each processor provides four banks of memory, each capable of supporting up to 2 DIMMs.

 DIMMs are organized into physical slots on DDR3 memory channels that belong to

processor sockets.

 The memory channels from processor socket 1 are identified as Channel A, B and C.

The memory channels from processor socket 2 are identified as Channel D, E and F.

 The silk screened DIMM slot identifiers on the board provide information about the

channel, and therefore the processor to which they belong. For example, DIMM_A1 is

the first slot on Channel A on processor 1; DIMM_D1 is the first DIMM socket on

Channel D on processor 2.

 The memory slots associated with a given processor are unavailable if the

corresponding processor socket is not populated.

 A processor may be installed without populating the associated memory slots provided a

second processor is installed with associated memory.

In this case, the memory is

shared by the processors.

However, the platform suffers performance degradation and

latency due to the remote memory.

 Processor sockets are self-contained and autonomous. However, all memory subsystem

support (such as Memory RAS, Error Management,) in the BIOS setup is applied

commonly across processor sockets.

 The BLUE memory slots on the server board identify the first memory slot for a given

memory channel.

DIMM population rules require that DIMMs within a channel be populated starting with the BLUE

DIMM slot or DIMM farthest from the processor in a “fill-farthest” approach. In addition, when

populating a Quad-rank DIMM with a Single- or Dual-rank DIMM in the same channel, the

Quad-rank DIMM must be populated farthest from the processor.

On the Intel

Server Board S2400EP, a total of eight DIMM slots is provided (two CPUs – three

Channels/CPUs). The nomenclature for DIMM sockets is detailed in the following table:

Table 5. Intel

Server Board S2400EP DIMM Nomenclature

Processor Socket 1

Processor Socket 2

(0)

Channel A

(1)

Channel B

(2)

Channel C

(0)

Channel D

(1)

Channel E

(2)

Channel F