Asus L1N64-SLI WS/B - Manual (Page 34)

2- Chapter 2: Hardware information
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.
Important notice on installing Windows ® XP 32-bit version
If you install Windows ® XP 32-bit version Operating System (OS), the limitation
of this OS version is that it may reserve a certain amount of memory space for
system devices. We recommend that you install less than 3 GB system memory
if you would like to work under Windows ® XP 32-bit version OS. The excess
memory installation will not cause any usage problem, but it will not give users
the benefit of manipulating this excess memory space.
Visit the ASUS FAQ site for further
explanation:
http://support.asus.com/faq/faq.
aspx?SLanguage=en-us
Under General Search, make the
selections as shown, then click Search.
Click the article titled “4GB memory installed but less memory size
detected.”
You also may check the URLs below for third party comments on this issue:
http://dlsvr01.asus.com/pub/ASUS/mb/4GB_Rev1.pdf
http://www.intel.com/support/motherboards/server/sb/cs-016594.htm
• For dual-channel configuration, the total size of memory module(s) installed
per channel must be the same (DIMM_A1 + DIMM_B1 = DIMM_A2 +
DIMM_B2).
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from
the same vendor. Visit the ASUS website (www.asus.com) for the latest
Qualified Vendors List.
• When using only one DDR2 DIMM module, install it into slot DIMM_A1
only.
• For single-channel memory configuration, start installing the DDR2 DIMMs
from slot DIMM_A1 or DIMM_B1.