Gigabyte GA-K8NS-939 User Manual page 15

Dual Channel DDR
GA-K8NS-939 / GA-K8NS Pro-939 supports the Dual Channel Technology. After operating the Dual
Channel Technology, the bandwidth of Memory Bus will double.
GA-K8NS-939 / GA-K8NS Pro-939 includes 4 DIMM sockets, and each Channel has two DIMM sockets as
following:
Channel A : DDR 1, DDR 3
Channel B : DDR 2, DDR 4
If you want to operate the Dual Channel Technology, please note the following explanations due to the
limitation of chipset specifications.
1. Dual channel memory cannot be used if one DDR memory module is installed.
2. If two DDR memory modules are installed (same storage capacity), one must be added to a
Channel A slot and the other in a Channel B slot in order to use dual channel memory.
You can simply install the memory modules into slots of the same color but we recommend slotting
them into DDR1 and DDR2. Dual channel memory cannot function if both DDR memory modules
are installed on the same channel.
3. If four DDR memory modules are installed, please use memory of the same storage capacity in
order to use dual channel memory and for BIOS to detect all the DDR memory modules.
The following table is for Dual Channel Technology combination: (DS: Double Side, SS: Single Side)
DDR 1
2 memory modules DS/SS
X
4 memory modules DS/SS
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
- 15 -
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