Populating DIMM Sockets

There are two DIMM sockets on the system board, with one socket per channel.

Populate the DIMM sockets in the following order: Channel A then Channel B

Description

Socket Color

Insertion Order

 

 

 

Channel A (populate first)

Blue

1

 

 

 

Channel B

Blue

2

NOTE: A DIMM must occupy the Channel A socket.

●The system will operate in single channel mode if the DIMM sockets are populated in one channel only.

●The system will operate in a higher-performing dual channel mode if the total memory capacity of the DIMM in Channel A is equal to the total memory capacity of the DIMM in Channel B. The technology and device width can vary between the channels. For example, if Channel A is populated with one 2-GB DIMMs and Channel B is populated with one 2-GB DIMM, the system will operate in dual channel mode.

●The system will operate in flex mode if the total memory capacity of the DIMM in Channel A is not equal to the total memory capacity of the DIMM in Channel B. In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. For optimal speed, the channels should be balanced so that the largest amount of memory is spread between the two channels. If one channel will have more memory than the other, the larger amount should be assigned to Channel A. For example, if you are populating the sockets with one 2-GB DIMM, and one 1-GB DIMMs, Channel A should be populated with the 2-GB DIMM, and Channel B should be populated with the 1-GB DIMM. With this configuration, 2 GB will run as dual channel and 1 GB will run as single channel.

●In any mode, the maximum operational speed is determined by the slowest DIMM in the system.

92 Chapter 8 Removal and Replacement Procedures – Small Form Factor (SFF) Chassis

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HP Pro 3400 XZ939UT#ABA, Pro 3515 E3S87UTABA, D3K31UTABA, 3500p D8C44UTABA Populating Dimm Sockets, Description Socket Color
Page 101 Page 103

E3S87UTABA, Pro 3515 E3S87UTABA, Pro 3400 XZ939UT#ABA, C7A31UT#ABA, Pro 3400 A7L25UT#ABA specifications

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