Asus P5SD2-X 1.7.1Overview, 1.7.2Memory Configurations, 1.7System memory

1.7System memory

1.7.1Overview

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

The following figure illustrates the location of the sockets:

P5SD2-X

DIMM A1 DIMM A2 DIMM B1 DIMM B2

P5SD2-X 240-pin DDR2 DIMM sockets

1.7.2Memory Configurations

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

•Installing DDR DIMMs other than the recommended configurations may cause memory sizing error or system boot failure. Use any of the recommended configurations in Table 1.

•Due to chipset limitation, this motherboard supports a maximum of 4GB total memory and four (4) ranks per memory channel only. A warning message appears during POST if the total density of memory modules installed exceeds the chipset capacity. Excess memory will not be utilized by the system.

•Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor.

•Due to chipset limitation, DIMM modules with 128 Mb memory chips or double-sided x16 memory chips are not supported in this motherboard.

•Use only qualified DIMMs modules on this motherboard. Visit the ASUS website (www.asus.com) for the latest DDR2 Qualified Vendors List (QVL).

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