TX1310 M3 Upgrade and Maintenance Manual 123
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.
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.
Channel A B
Slot ID CHA1 CHA3 CHB2 CHB4
# of DIMMs
1o
2o o
3ooo
4oooo
Table 5: Mounting order
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