Asus A8N-SLI SE manual System memory, Memory Configurations

2.4System memory

2.4.1 Overview

The motherboard comes with four 184-pin Double Data Rate (DDR) Dual Inline Memory Modules (DIMM) sockets.

The following figure illustrates the location of the sockets:

A8N-SLI SE

DIMM A1 DIMM A2 DIMM B1 DIMM B2

A8N-SLI SE 184-pin DDR DIMM Sockets

Channel	Sockets
Channel A	DIMM_A1 and DIMM_A2
Channel B	DIMM_B1 and DIMM_B2

2.4.2 Memory Configurations

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

•For dual-channel configuration, the total size of memory module(s)

installed per channel must be the same for better performance (DIMM_A1+DIMM_A2=DIMM_B1+DIMM_B2).

•When using one DDR DIMM module, install into DIMM_B1 slot only.

•When using two DDR DIMM modules, install into DIMM_A1 and DIMM_B1 slots only.

•Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Refer to the DDR400 Qualified Vendors List on the next page for details.

•Due to chipset resource allocation, the system may detect less than 4 GB of system memory when you installed four 1 GB DDR memory modules.

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

ASUS A8N-SLI SE 2-11