2-10 Chapter 2: Hardware information
2.4 System memory
2.4.1 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 gure illustrates the location of the DDR2 DIMM sockets:
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B
DIMM_B1 and DIMM_B2
2.4.2 Memory congurations
You may install 256 MB, 512 MB, 1 GB, and 2GB unbuffered ECC/non-ECC
DDR2 DIMMs into the DIMM sockets.
Recommended Memory Congurations
Mode
Sockets
DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
Single Channel
Populated – – –
– Populated – –
– – Populated –
– – – Populated
Dual-channel (1)
Populated – Populated –
– Populated – Populated
Dual-channel (2)
Populated Populated Populated Populated
R
M2N4-SLI
M2N4-SLI 240-pin DDR2 DIMM Sockets
DIMM_B1
DIMM_A2
DIMM_B2
DIMM_A1
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