User`s manual

Motherboard Manual
10
C. Dual Channel Memory installation
To trigger the Dual Channel function of the motherboard, the memory module
must meet the following requirements:
Install memory module of the same density in pairs, shown in the following
table.
Dual Channel Status
DDR2_A1
DDR2_A2 DDR2_B1 DDR2_B2
Enabled O X O X
Enabled X O X O
Enabled O O O O
(O means memory installed, X means memory not installed.)
The DRAM bus width of the memory module must be the same (x8 or
x16)