1.7System memory

1.7.1 Overvi ew

The motherboard comes with two 240-pin Double Data Rate 2 (DDR2) and two 184-pin DDR Dual Inline Memory Modules (DIMM) sockets.

DDR2 DIMMS are notched differently to prevent misplacement in DDR DIMM sockets.

The following figure illustrates the location of the sockets:

 

Color

 

 

 

 

 

 

Sockets

 

Blue

 

 

 

 

 

 

DDR_1 and DDR_2

 

Yellow

 

 

 

 

 

 

DDR2_1 and DDR2_2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P5VDC-X

DDR2 B1

DDR2 A1

DDR B1

DDR A1

P5VDC-X DDR & DDR2 DIMM Sockets

To prevent damage to the motherboard, do not use DDR and DDR2 memory simultaneously.

Due to chipset resource allocation, the system may detect less than 2 GB system memory when you installed two 1 GB DDR2 or DDR memory modules.

1.7.2 Memory Confi gurati ons

You may install 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR/DDR2 DIMMs into the DIMM sockets using the memory configurations in this section.

ASUS P5VDC-X

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