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ASUS P5LD2 2-13
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:
2.4.2 Memory congurations
You may install 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR2
DIMMs into the DIMM sockets.
• For dual-channel conguration, the total size of memory module(s)
installed per channel must be the same (DIMM_A1 + DIMM_A2 =
DIMM_B1 + DIMM_B2).
• 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 DDR2 Qualied Vendors List on
the next page for details.
• Due to chipset resource allocation, the system may detect less than
4 GB system memory when you installed four 1 GB DDR2 memory
modules.
• This motherboard does not support memory modules made up of
128 Mb chips or double sided x16 memory modules.
P5LD2
®
P5LD2 DIMM sockets
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
Channel Sockets
Channel A DIMM_A1 and DIMM_A
Channel B DIMM_B1 and DIMM_B2