Gigabyte GA-K8NS-939 User Manual page 15

Dual Channel Memory Configuration
The GA-K8NS-939 / GA-K8NS Pro-939 supports the Dual Channel Technology. When the Dual Channel
Technology is activated, the bandwidth of memory bus will be double the original one.
Due to CPU limitation, if you want to operate the Dual Channel Technology, please follow the guidelines
below for Dual Channel memory configuration.
1. Dual Channel mode will not be enabled if only one DDR memory module is installed.
2. To enable Dual Channel mode with 2 memory modules (it is recommended to use memory
modules of identical brand, size, chips, and speed), you must install them into DIMM sockets of the
same color.
3. To enable Dual Channel mode with 4 memory modules, it is recommended to use memory
modules of identical brand, size, chips, and speed.
The following is a Dual Channel Memory configuration table: (DS: Double Side, SS: Single Side)
DDR 1
2 memory modules DS/SS
X
4 memory modules DS/SS
If two memory modules are to be used to achieve Dual Channel mode, we recommend installing
them in DDR1 and DDR2 DIMM sockets.
All of the memory configurations below will cause system unable to boot.
(DS: Double Side, SS: Single Side)
DDR 1
1 memory module X
X
2 memory modules X
DS/SS
X
3 memory modules DS/SS
X
DS/SS
DS/SS
DDR 2 DDR 3
DS/SS X
X DS/SS
DS/SS DS/SS
DDR 2 DDR 3
DS/SS X
X X
DS/SS DS/SS
X X
DS/SS X
DS/SS DS/SS
DS/SS DS/SS
X DS/SS
DS/SS X
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DDR 4
X
DS/SS
DS/SS
DDR 4
X
DS/SS
X
DS/SS
DS/SS
X
DS/SS
DS/SS
DS/SS
Hardware Installation