Installing The Memory - Gigabyte B660 DS3H AC 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 supported
memory speeds and memory modules.)
• 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.
Dual Channel Memory Configuration
This motherboard provides four memory sockets and supports Dual Channel Technology. After the memory
is installed, the BIOS will automatically detect the specifications and capacity of the memory. Enabling Dual
Channel memory mode will double the original memory bandwidth.
The four memory sockets are divided into two channels and each channel has two memory sockets as following:
Channel A: DDR5_A1j/DDR4_A1klm, DDR5_A2j/DDR4_A2klm
Channel B: DDR5_B1j/DDR4_B1klm, DDR5_B2j/DDR4_B2klm
* Recommended Dual Channel Memory Configuration:
DDR5_A1j
DDR4_A1klm
2 Modules - -
4 Modules DS/SS
(SS=Single-Sided, DS=Double-Sided, "- -"=No Memory)
Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.
1. Dual Channel mode cannot be enabled if only one memory module is installed.
2. When enabling Dual Channel mode with two or four memory modules, it is recommended that memory of
the same capacity, brand, speed, and chips be used.
When installing a single memory module, we recommend that you install it in the DDR5_A2j/
DDR4_A2klm or DDR5_B2j/DDR4_B2klm socket.
j Only for B660 DS3H AC.
k Only for B660 DS3H AC DDR4.
l Only for B660 DS3H AX DDR4.
m Only for B660 DS3H DDR4.
DDR5_A2j DDR5_B1j
DDR4_A2klm DDR4_B1klm
DS/SS - -
DS/SS DS/SS
- 16 -
DDR5_B2j
DDR4_B2klm
DS/SS
DS/SS
DDR5_A1j/DDR4_A1klm
DDR5_A2j/DDR4_A2klm
DDR5_B1j/DDR4_B1klm
DDR5_B2j/DDR4_B2klm