System Memory; Overview; Memory Configurations - Asus CROSSHAIR User Manual

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 figure illustrates the location of the DDR2 DIMM sockets:
CROSSHAIR
CROSSHAIR 240-pin DDR DIMM Sockets
Channel
Channel A
Channel B
2.4.2

Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC/non-ECC
DDR2 DIMMs into the DIMM sockets.
•
•
•
2-2
DIMM_A1 and DIMM_A2
DIMM_B1 and DIMM_B2
If you installed Windows
recommend that you install less than 3 GB of total memory. For Windows
XP 64-bit version operating system, the maxium support is 8 GB of total
memory.
For dual-channel configuration, 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, we recommend that you obtain memory modules from the
same vendor. Refer to the DDR2 Qualified Vendors List on the next page
for details.
Sockets
XP 32-bit version operating system, we
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Chapter 2: Hardware information
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