Table 4-3. Sample Dual Channel L-Shaped Asymmetric Organization Mode - Intel X38 Configuration Manual

4.2.2.2 L-shaped Asymmetric Mode
In this addressing mode the lowest DRAM memory is mapped to dual channel
operation and the top most DRAM memory is mapped to single channel operation. In
this mode the system can run at one zone of dual channel mode and one zone of
single channel mode simultaneously across the whole memory array.
This mode is used when both Channel-0 and Channel-1 DIMMs are populated in any
order with the total amount of memory in each channel being different.
Table 4-3 is a sample dual channel L-shaped asymmetric memory configuration
showing the rank organization.

Table 4-3. Sample Dual Channel L-Shaped Asymmetric Organization Mode

Rank
Rank 3
Rank 2
Rank 1
Rank 0
14
Cumulative
Channel 0
Top Address in
Population
Channel 0
0 MB 2048 MB
0 MB 2048 MB
512 MB 2048 MB
512 MB 1024 MB
§
Memory Organization and Operating Modes
Channel 1
Population
0 MB
256 MB
512 MB
512 MB
Cumulative
Top Address
in Channel 1
2304 MB
2304 MB
2048 MB
1024 MB
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