Asus P5LD2-X - Manual (Page 35)

ASUS P5LD2-X 2-13
2.4 System memory
2.4.1 Overview
The motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline
Memory Modules (DIMM) sockets.
The figure illustrates the location of the DDR2 DIMM sockets:
2.4.2 Memory configurations
You may install 128 MB, 256 MB, 512 MB and 1 GB unbuffered non-ECC
DDR2 DIMMs into the DIMM sockets.
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1
P5LD2-X
P5LD2-X 240-pin DDR2 DIMM Sockets
128 Pins
112 Pins
DIMM_B1 DIMM_A1
• 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. Refer to the DDR2 Qualified Vendors List on
the next page for details.
• If you install two 1 memory modules, the system may only recognize
less than 2GB because the address space is reserved for other
critical functions. This limitation appears on Windows® XP 32-
bit operation system which does not support Physical Address
Extension (PAE).
• If you install Windows® XP 32-bit operation system, a total memory
of less than 2GB is recommended.
• This motherboard does not support memory modules made up of
128 Mb chips or double sided x16 memory modules.