System Memory; Overview; Memory Configurations - Asus M2N-X Manual

1.7

System memory

1.7.1

Overview

The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline
Memory Modules (DIMM) sockets.
A DDR2 module has the same physical dimensions as a DDR DIMM but has
a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are
notched differently to prevent installation on a DDR DIMM socket.
The figure illustrates the location of the DDR2 DIMM sockets:
M2N-X
M2N-X 240-pin DDR2 DIMM Sockets
Channel
Channel A
Channel B
1.7.2

Memory configurations

You may install 256 MB, 512 MB, and 1 GB unbuffered/ECC/non-ECC DDR2
DIMMs into the DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B.
The system maps the total size of the lower-sized channel for the
dual-channel configuration. Any excess memory from the higher-
sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules
from the same vendor.
• This motherboard does not support memory modules made up of
128 Mb chips or double sided x16 memory modules.
1-12
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Sockets
DIMM_A1
DIMM_B1
Chapter 1: Product introduction