Memory Configurations; Supported Memory Configurations - Intel DZ68AF Specification

Table 3 lists the supported DIMM configurations.
Table 3. Supported Memory Configurations
DIMM
Capacity Configuration
512 MB SS
1024 MB SS
1024 MB SS
2048 MB DS
2048 MB SS
4096 MB DS
4096 MB SS
8192 MB DS
Note: "DS" refers to double-sided memory modules (containing two rows of SDRAM) and "SS" refers to
single-sided memory modules (containing one row of SDRAM).
For information about...
Tested Memory
1.5.1

Memory Configurations

The Intel Core i7, Intel Core i5, and Intel Core i3 processors in the LGA1155 socket
support the following types of memory organization:
Dual channel (Interleaved) mode. This mode offers the highest throughput for
•
real world applications. 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 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.
Flex mode. This mode provides the most flexible performance characteristics.
•
The bottommost DRAM memory (the memory that is lowest within the system
memory map) is mapped to dual channel operation; the topmost DRAM memory
(the memory that is nearest to the 8 GB address space limit), if any, is mapped to
single channel operation. Flex mode results in multiple zones of dual and single
channel operation across the whole of DRAM memory. To use flex mode, it is
necessary to populate both channels.
For information about...
Memory Configuration Examples
SDRAM SDRAM Organization
(Note)
Density Front-side/Back-side
1 Gbit 64 M x16/empty
1 Gbit 128 M x8/empty
2 Gbit 128 M x16/empty
1 Gbit 128 M x8/128 M x8
2 Gbit 128 M x16/empty
2 Gbit 256 M x8/256 M x8
4 Gbit 512 M x8/empty
4 Gbit 512 M x8/512 M x8
Refer to:
http://support.intel.com/support/motherboards/desktop/sb
/CS-025414.htm
Refer to:
http://www.intel.com/support/motherboards/desktop/sb/cs-
011965.htm
Product Description
Number of SDRAM
Devices
4
8
4
16
8
16
8
16
19