Installing The Memory; Dual/3 Channel Memory Configuration - Gigabyte GA-EX58-UD3R User Manual

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Installing the Memory

Read the following guidelines before you begin to install the memory:
• Make sure that the motherboard supports the memory. It is recommended that memory of
the same capacity, brand, speed, and chips be used.
(Go to GIGABYTE's website for the latest memory support list.)
• Always turn off the computer and unplug the power cord from the power outlet before
installing the memory to prevent hardware damage.
• Memory modules have a foolproof design. A memory module can be installed in only one
direction. If you are unable to insert the memory, switch the direction.

1-4-1 Dual/3 Channel Memory Configuration

memory mode may double or triple the original memory bandwidth.
The four DDR3 memory sockets are divided into three channels:
Channel 0: DDR3_1
Channel 1: DDR3_4
Channel 2: DDR3_2, DDR3_3
Due to chipset limitation, read the following guidelines before installing the memory in Dual or 3 Channel mode.
Dual Channel--
1. Dual Channel mode cannot be enabled if only one DDR3 memory module is installed.
2. When enabling Dual Channel mode with two modules, it is recommended that memory of the same
capacity, brand, speed, and chips be used. When enabling Dual Channel mode with two memory
modules, be sure to install them in the DDR3_1 and DDR3_4 or DDR3_1 and DDR3_2 sockets.
3 Channel--
1. 3 Channel mode cannot be enabled if only one or two DDR3 memory modules are installed.
2. When enabling 3 Channel mode with three or four modules, it is recommended that memory of the
same capacity, brand, speed, and chips be used.
When enabling 3 Channel mode with three memory modules, be sure to install them in the
DDR3_1, DDR3_2 and DDR3_4 sockets.
• If only one DDR3 memory module is installed, it is recommended to install it in the DDR3_1 socket.
• When memory modules of different capacity and chips are installed, a message which
says memory is operating in Flex Memory Mode will appear during the POST. Intel Flex
Memory Technology offers greater flexibility to upgrade by allowing different memory sizes
to be populated and remain in Dual/3 Channel mode/performance.
GA-EX58-UD3R Motherboard
This motherboard provides four DDR3 memory sockets and supports Dual/3
Channel Technology. After the memory is installed, the BIOS will automatically
detect the specifications and capacity of the memory. Dual or 3 Channel
Dual Channel Memory Configurations Table
DDR3_1 DDR3_3 DDR3_2 DDR3_4
Two Modules DS/SS
DS/SS
3 Channel Memory Configurations Table
DDR3_1 DDR3_3 DDR3_2 DDR3_4
Three Modules DS/SS
Four Modules DS/SS
(SS=Single-Sided, DS=Double-Sided, "- -"=No Memory)
- 16 -
- - - - DS/SS
- - DS/SS - -
- - DS/SS DS/SS
DS/SS DS/SS DS/SS