TX150 S8 / TX200 S7
Upgrade and Maintenance Manual 245
10.1.1 Memory sequence
10.1.1.1 Population rules
– Populate memory slot 1 / channel A (DIMM 1A) first (except Mirrored
Channel mode).
– In case of dual processor configurations, populate memory slot
1 / channel D (DIMM 1D) second (except Mirrored Channel mode).
– Within all channels, memory slot 1 must be populated prior to slot 2.
– If memory modules with different ranks are used, always populate the higher
number rank DIMM first (starting from slot 1).
– If memory modules with different capacities are used:
– Populate modules with higher capacities first.
– Within a channel, populate modules in descending order of capacity.
– If memory modules with different speeds are used, the lowest clock rate
applies for all DIMMs.
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.
– Mixing UDIMMs or RDIMMs is not allowed.
– Mixing ECC and non-ECC DIMMs is not allowed.
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