Item

Description

Socket Color

Insertion Order

 

 

 

 

1

XMM1 socket, Channel A

Black

1

 

(populate first)

 

 

 

 

 

 

2

XMM2 socket, Channel B

Blue

3

 

 

 

 

3

XMM3 socket, Channel A

Black

2

 

 

 

 

4

XMM4 socket, Channel B

Blue

4

NOTE: A DIMM must occupy the XMM1 socket.

The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending on how the DIMMs are installed.

●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 DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology and device width can vary between the channels. For example, if Channel A is populated with two 1-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 DIMMs in Channel A is not equal to the total memory capacity of the DIMMs 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

58 Chapter 7 Removal and Replacement Procedures Microtower (MT) Chassis