Intel DX79SI Product Guide for Intel Desktop Board DX79SI - Page 16

Memory Configurations, Memory Channel and DIMM Configuration - supported processors

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Intel Desktop Board DX79SI Product Guide Memory Configurations The Intel Core i7 and Intel Xeon processors support the following types of memory organization: • Quad-channel (Interleaved) mode. Quad-channel mode offers the highest throughput for real world applications. • Tri-channel (Interleaved) mode. Tri-channel mode is enabled when the installed memory capacities of any three DIMM channels are equal. • Dual-channel (Interleaved) mode. Dual-channel mode is enabled when the installed memory capacities of both DIMM channels are equal. Technology and device width can vary from one channel to the other but the installed memory capacity for each channel must be equal. If different speed DIMMs are used between channels, the slowest memory timing will be used. • Single-channel (Asymmetric) mode. This mode is equivalent to single-channel bandwidth operation for real world applications. This mode is used when only a single DIMM is installed or the channel memory capacities are unequal. Technology and device width can vary from one channel to the other. If different speed DIMMs are used between channels, the slowest memory timing will be used. Figure 2 shows the board's memory channel and DIMM configuration Figure 2. Memory Channel and DIMM Configuration For information on installing memory, refer to page 42 in Chapter 2. 16

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Intel Desktop Board DX79SI Product Guide
16
Memory Configurations
The Intel Core i7 and Intel Xeon processors support the following types of memory
organization:
•
Quad-channel (Interleaved) mode.
Quad-channel mode offers the highest
throughput for real world applications.
•
Tri-channel (Interleaved) mode.
Tri-channel mode is enabled when the installed
memory capacities of any three DIMM channels are equal.
•
Dual-channel (Interleaved) mode.
Dual-channel mode is enabled when the
installed memory capacities of both DIMM channels are equal.
Technology and
device width can vary from one channel to the other but the installed memory
capacity for each channel must be equal.
If different speed DIMMs are used
between channels, the slowest memory timing will be used.
•
Single-channel (Asymmetric) mode.
This mode is equivalent to single-channel
bandwidth operation for real world applications.
This mode is used when only a
single DIMM is installed or the channel memory capacities are unequal.
Technology and device width can vary from one channel to the other.
If different
speed DIMMs are used between channels, the slowest memory timing will be used.
Figure 2 shows the board’s memory channel and DIMM configuration
Figure 2.
Memory Channel and DIMM Configuration
For information on installing memory, refer to page 42 in Chapter 2.