Hardware Reference Guide - dc7600 USDT

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Hardware Upgrades
DIMM Sockets
The system will automatically operate in single channel mode, dual
channel Asymmetric mode, or a higher-performing dual channel
Interleaved mode, depending on how the DIMMs are installed.
■ The system will operate in a single channel mode if the DIMM
sockets are populated in one channel only.
■ The system will operate in dual channel Asymmetric mode if the
total memory capacity of the DIMMs in Channel A is not equal to
the total memory capacity of DIMMs in Channel B.
■ The system will operate in a higher-performing dual channel
Interleaved 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. However, the technology and device width can vary
between the channels. For example, if Channel A is populated
with one 512MB DIMM and Channel B is populated with two
256MB DIMMs, the system will operate in Interleaved mode.
There are three DIMM sockets on the system board, with one socket
in memory Channel A and two sockets in memory Channel B. The
sockets are labeled XMM1, XMM3, and XMM4. Socket XMM1
operates in memory Channel A; sockets XMM3 and XMM4 operate
in memory Channel B.