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10.1.1 Memory sequence
– Populate memory slot 1 / channel A (CHA1) first.
– Within both channels, memory slot 1 must be populated prior to slot 2.
– If memory modules with different capacities are used:
– Install modules with higher capacities first.
– Within a channel, install modules in descending order of capacity.
– If memory modules with different speeds are used, the lowest clock rate
applies for all DIMMs.
Channel
Slot ID
1
2
3
4
Table 5: Mounting order
10.1.2 Modes of operation
– The maximum performance can be achieved in a symmetric dual-channel
configuration. Therefore both channels have to be populated with the same
amount of memory. The DRAM device technology (1 Gbit / 2 Gbit / 4 Gbit)
may vary from one channel to the other.
– If the amount of memory differs between the two channels, the system board
will run in dual-channel asymmetric mode.
– Regardless of the mode, all DIMMs will run at the highest common
frequency that is allowed by the SPD Data of the DIMMs and the maximum
speed of the selected configuration.
– Single-channel mode is used if one memory module is populated in CHA1.
TX1310 M3
A
CHA1
CHA3
o
o
o
o
Upgrade and Maintenance Manual
CHB2
o
o
o
o
o
Main memory
B
CHB4
o
123
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