Biostar P31-A7 Setup Manual - Page 11

B. Memory Capacity, C. Dual Channel Memory installation, D. FSB Supporting Table - memory support

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B. Memory Capacity P31-A7 DIMM Socket Location DDR2_A1 DDR2_B1 DDR Module 256MB/512MB/1GB/2GB 256MB/512MB/1GB/2GB Total Memory Size Max is 4B. 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_B1 Disabled O X Disabled X O Enabled 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) D. FSB Supporting Table According to the FSB frequency of the installed CPU, the motherboard could support DDR2 533/667/800 modules. Please refer to the table below to find out the proper RAM module that fits the FSB of the installed CPU. FSB of CPU FSB 533 DDR2 Module FSB 800 FSB 1066 DDR2 533 O X O DDR2 667 O O O DDR2 800 O O O (O means supported, X means not supported.) FSB1333 X O O 9

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P31-A7
9
B. Memory Capacity
DIMM Socket
Location
DDR Module
Total Memory
Size
DDR2_A1
256MB/512MB/1GB/2GB
DDR2_B1
256MB/512MB/1GB/2GB
Max is 4B.
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_B1
Disabled
O
X
Disabled
X
O
Enabled
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)
D. FSB Supporting Table
According to the FSB frequency of the installed CPU, the motherboard could
support DDR2 533/667/800 modules.
Please refer to the table below to find
out the proper RAM module that fits the FSB of the installed CPU.
FSB of CPU
DDR2 Module
FSB 533
FSB 800
FSB 1066
FSB1333
DDR2 533
O
X
O
X
DDR2 667
O
O
O
O
DDR2 800
O
O
O
O
(O means supported, X means not supported.)