Asus P5L 1394 Computer Hardware User Manual


 
ASUS P5L 1394 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 configurations
You may install 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR2
DIMMs into the DIMM sockets.
For dual‑channel conguration, 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 Qualied 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.
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2
P5L 1394
R
P5L 1394
240-pin DDR2 DIMM Sockets
128 Pins
112 Pins
DIMM_A2
DIMM_B1
DIMM_B2
DIMM_A1